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Finding the Fourth Proportional to 292,759.29, 439,138.94 and 71,143.29

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Solution

The fourth proportional to 292,759.29, 439,138.94 and 71,143.29 is: 106,714.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,759.29 : 439,138.94 = 71,143.29 : x
  2. Step 2: Convert to fraction form
    292,759.29/439,138.94 = 71,143.29/x
  3. Step 3: Cross multiply
    292,759.29x = 439,138.94 × 71,143.29
  4. Step 4: Simplify right side
    292,759.29x = 31,241,788,603.00
  5. Step 5: Solve for x
    x = 31,241,788,603.00/292,759.29
  6. Step 6: Final answer
    x = 106,714.94

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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.