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Finding the Fourth Proportional to 399,077.20, 598,644.60 and 240,965.20

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Solution

The fourth proportional to 399,077.20, 598,644.60 and 240,965.20 is: 361,465.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,077.20 : 598,644.60 = 240,965.20 : x
  2. Step 2: Convert to fraction form
    399,077.20/598,644.60 = 240,965.20/x
  3. Step 3: Cross multiply
    399,077.20x = 598,644.60 × 240,965.20
  4. Step 4: Simplify right side
    399,077.20x = 144,252,515,767.92
  5. Step 5: Solve for x
    x = 144,252,515,767.92/399,077.20
  6. Step 6: Final answer
    x = 361,465.19

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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.