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Finding the Fourth Proportional to 402,066.72, 603,007.96 and 240,006.56

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Solution

The fourth proportional to 402,066.72, 603,007.96 and 240,006.56 is: 359,954.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,066.72 : 603,007.96 = 240,006.56 : x
  2. Step 2: Convert to fraction form
    402,066.72/603,007.96 = 240,006.56/x
  3. Step 3: Cross multiply
    402,066.72x = 603,007.96 × 240,006.56
  4. Step 4: Simplify right side
    402,066.72x = 144,725,866,132.22
  5. Step 5: Solve for x
    x = 144,725,866,132.22/402,066.72
  6. Step 6: Final answer
    x = 359,954.85

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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.