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Finding the Fourth Proportional to 292,489.34, 438,678.52 and 142,578.86

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Solution

The fourth proportional to 292,489.34, 438,678.52 and 142,578.86 is: 213,841.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,489.34 : 438,678.52 = 142,578.86 : x
  2. Step 2: Convert to fraction form
    292,489.34/438,678.52 = 142,578.86/x
  3. Step 3: Cross multiply
    292,489.34x = 438,678.52 × 142,578.86
  4. Step 4: Simplify right side
    292,489.34x = 62,546,280,738.25
  5. Step 5: Solve for x
    x = 62,546,280,738.25/292,489.34
  6. Step 6: Final answer
    x = 213,841.24

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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.