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Finding the Fourth Proportional to 399,045.20, 598,596.60 and 240,933.20

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Solution

The fourth proportional to 399,045.20, 598,596.60 and 240,933.20 is: 361,417.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,045.20 : 598,596.60 = 240,933.20 : x
  2. Step 2: Convert to fraction form
    399,045.20/598,596.60 = 240,933.20/x
  3. Step 3: Cross multiply
    399,045.20x = 598,596.60 × 240,933.20
  4. Step 4: Simplify right side
    399,045.20x = 144,221,794,347.12
  5. Step 5: Solve for x
    x = 144,221,794,347.12/399,045.20
  6. Step 6: Final answer
    x = 361,417.19

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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.