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Finding the Fourth Proportional to 399,338.10, 599,007.15 and 249,747.30

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Solution

The fourth proportional to 399,338.10, 599,007.15 and 249,747.30 is: 374,620.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,338.10 : 599,007.15 = 249,747.30 : x
  2. Step 2: Convert to fraction form
    399,338.10/599,007.15 = 249,747.30/x
  3. Step 3: Cross multiply
    399,338.10x = 599,007.15 × 249,747.30
  4. Step 4: Simplify right side
    399,338.10x = 149,600,418,393.20
  5. Step 5: Solve for x
    x = 149,600,418,393.20/399,338.10
  6. Step 6: Final answer
    x = 374,620.95

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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.