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Finding the Fourth Proportional to 566,308.81, 781,330.17 and 321,253.23

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Solution

The fourth proportional to 566,308.81, 781,330.17 and 321,253.23 is: 443,229.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,308.81 : 781,330.17 = 321,253.23 : x
  2. Step 2: Convert to fraction form
    566,308.81/781,330.17 = 321,253.23/x
  3. Step 3: Cross multiply
    566,308.81x = 781,330.17 × 321,253.23
  4. Step 4: Simplify right side
    566,308.81x = 251,004,840,808.95
  5. Step 5: Solve for x
    x = 251,004,840,808.95/566,308.81
  6. Step 6: Final answer
    x = 443,229.62

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Double scale
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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.