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Finding the Fourth Proportional to 292,279.90, 438,419.85 and 134,815.90

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Solution

The fourth proportional to 292,279.90, 438,419.85 and 134,815.90 is: 202,223.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,279.90 : 438,419.85 = 134,815.90 : x
  2. Step 2: Convert to fraction form
    292,279.90/438,419.85 = 134,815.90/x
  3. Step 3: Cross multiply
    292,279.90x = 438,419.85 × 134,815.90
  4. Step 4: Simplify right side
    292,279.90x = 59,105,966,655.62
  5. Step 5: Solve for x
    x = 59,105,966,655.62/292,279.90
  6. Step 6: Final answer
    x = 202,223.85

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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.