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Finding the Fourth Proportional to 292,011.72, 438,015 and 92,332.26

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Solution

The fourth proportional to 292,011.72, 438,015 and 92,332.26 is: 138,497.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,011.72 : 438,015 = 92,332.26 : x
  2. Step 2: Convert to fraction form
    292,011.72/438,015 = 92,332.26/x
  3. Step 3: Cross multiply
    292,011.72x = 438,015 × 92,332.26
  4. Step 4: Simplify right side
    292,011.72x = 40,442,914,863.90
  5. Step 5: Solve for x
    x = 40,442,914,863.90/292,011.72
  6. Step 6: Final answer
    x = 138,497.57

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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.