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Finding the Fourth Proportional to 332,143.40, 498,279.90 and 142,603.40

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Solution

The fourth proportional to 332,143.40, 498,279.90 and 142,603.40 is: 213,932.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,143.40 : 498,279.90 = 142,603.40 : x
  2. Step 2: Convert to fraction form
    332,143.40/498,279.90 = 142,603.40/x
  3. Step 3: Cross multiply
    332,143.40x = 498,279.90 × 142,603.40
  4. Step 4: Simplify right side
    332,143.40x = 71,056,407,891.66
  5. Step 5: Solve for x
    x = 71,056,407,891.66/332,143.40
  6. Step 6: Final answer
    x = 213,932.92

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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.