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Finding the Fourth Proportional to 518,390.69, 715,230.10 and 337,369.05

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Solution

The fourth proportional to 518,390.69, 715,230.10 and 337,369.05 is: 465,472.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,390.69 : 715,230.10 = 337,369.05 : x
  2. Step 2: Convert to fraction form
    518,390.69/715,230.10 = 337,369.05/x
  3. Step 3: Cross multiply
    518,390.69x = 715,230.10 × 337,369.05
  4. Step 4: Simplify right side
    518,390.69x = 241,296,499,790.12
  5. Step 5: Solve for x
    x = 241,296,499,790.12/518,390.69
  6. Step 6: Final answer
    x = 465,472.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.