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Finding the Fourth Proportional to 321,668.70, 443,836.35 and 185,700.30

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Solution

The fourth proportional to 321,668.70, 443,836.35 and 185,700.30 is: 256,228.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,668.70 : 443,836.35 = 185,700.30 : x
  2. Step 2: Convert to fraction form
    321,668.70/443,836.35 = 185,700.30/x
  3. Step 3: Cross multiply
    321,668.70x = 443,836.35 × 185,700.30
  4. Step 4: Simplify right side
    321,668.70x = 82,420,543,345.91
  5. Step 5: Solve for x
    x = 82,420,543,345.91/321,668.70
  6. Step 6: Final answer
    x = 256,228.05

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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.