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Finding the Fourth Proportional to 292,445.76, 438,668.62 and 159,437.87

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Solution

The fourth proportional to 292,445.76, 438,668.62 and 159,437.87 is: 239,156.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,445.76 : 438,668.62 = 159,437.87 : x
  2. Step 2: Convert to fraction form
    292,445.76/438,668.62 = 159,437.87/x
  3. Step 3: Cross multiply
    292,445.76x = 438,668.62 × 159,437.87
  4. Step 4: Simplify right side
    292,445.76x = 69,940,387,418.11
  5. Step 5: Solve for x
    x = 69,940,387,418.11/292,445.76
  6. Step 6: Final answer
    x = 239,156.78

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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.