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Finding the Fourth Proportional to 321,157.80, 443,117.70 and 185,233.32

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Solution

The fourth proportional to 321,157.80, 443,117.70 and 185,233.32 is: 255,575.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,157.80 : 443,117.70 = 185,233.32 : x
  2. Step 2: Convert to fraction form
    321,157.80/443,117.70 = 185,233.32/x
  3. Step 3: Cross multiply
    321,157.80x = 443,117.70 × 185,233.32
  4. Step 4: Simplify right side
    321,157.80x = 82,080,162,721.76
  5. Step 5: Solve for x
    x = 82,080,162,721.76/321,157.80
  6. Step 6: Final answer
    x = 255,575.80

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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.