Home / 321,539,882,728.16-443,396,142,079.62-213,115,332,423.44

Finding the Fourth Proportional to 321,539,882,728.16, 443,396,142,079.62 and 213,115,332,423.44

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Solution

The fourth proportional to 321,539,882,728.16, 443,396,142,079.62 and 213,115,332,423.44 is: 293,881,167,750.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,539,882,728.16 : 443,396,142,079.62 = 213,115,332,423.44 : x
  2. Step 2: Convert to fraction form
    321,539,882,728.16/443,396,142,079.62 = 213,115,332,423.44/x
  3. Step 3: Cross multiply
    321,539,882,728.16x = 443,396,142,079.62 × 213,115,332,423.44
  4. Step 4: Simplify right side
    321,539,882,728.16x = 94,494,516,214,569,052,930,048
  5. Step 5: Solve for x
    x = 94,494,516,214,569,052,930,048/321,539,882,728.16
  6. Step 6: Final answer
    x = 293,881,167,750.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.