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Finding the Fourth Proportional to 464,172.39, 640,767.71 and 292,342.87

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Solution

The fourth proportional to 464,172.39, 640,767.71 and 292,342.87 is: 403,565.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,172.39 : 640,767.71 = 292,342.87 : x
  2. Step 2: Convert to fraction form
    464,172.39/640,767.71 = 292,342.87/x
  3. Step 3: Cross multiply
    464,172.39x = 640,767.71 × 292,342.87
  4. Step 4: Simplify right side
    464,172.39x = 187,323,872,876.55
  5. Step 5: Solve for x
    x = 187,323,872,876.55/464,172.39
  6. Step 6: Final answer
    x = 403,565.31

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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.