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Finding the Fourth Proportional to 487,071.10, 730,606.65 and 221,350.60

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Solution

The fourth proportional to 487,071.10, 730,606.65 and 221,350.60 is: 332,025.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,071.10 : 730,606.65 = 221,350.60 : x
  2. Step 2: Convert to fraction form
    487,071.10/730,606.65 = 221,350.60/x
  3. Step 3: Cross multiply
    487,071.10x = 730,606.65 × 221,350.60
  4. Step 4: Simplify right side
    487,071.10x = 161,720,220,341.49
  5. Step 5: Solve for x
    x = 161,720,220,341.49/487,071.10
  6. Step 6: Final answer
    x = 332,025.90

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.