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Finding the Fourth Proportional to 518,358.12, 715,331.02 and 292,076.52

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Solution

The fourth proportional to 518,358.12, 715,331.02 and 292,076.52 is: 403,063.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,358.12 : 715,331.02 = 292,076.52 : x
  2. Step 2: Convert to fraction form
    518,358.12/715,331.02 = 292,076.52/x
  3. Step 3: Cross multiply
    518,358.12x = 715,331.02 × 292,076.52
  4. Step 4: Simplify right side
    518,358.12x = 208,931,394,969.65
  5. Step 5: Solve for x
    x = 208,931,394,969.65/518,358.12
  6. Step 6: Final answer
    x = 403,063.80

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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.