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Finding the Fourth Proportional to 402,240.96, 603,360.72 and 102,721.59

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Solution

The fourth proportional to 402,240.96, 603,360.72 and 102,721.59 is: 154,082.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,240.96 : 603,360.72 = 102,721.59 : x
  2. Step 2: Convert to fraction form
    402,240.96/603,360.72 = 102,721.59/x
  3. Step 3: Cross multiply
    402,240.96x = 603,360.72 × 102,721.59
  4. Step 4: Simplify right side
    402,240.96x = 61,978,172,501.94
  5. Step 5: Solve for x
    x = 61,978,172,501.94/402,240.96
  6. Step 6: Final answer
    x = 154,082.20

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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.