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Finding the Fourth Proportional to 324,781.50, 487,114.74 and 88,142.58

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Solution

The fourth proportional to 324,781.50, 487,114.74 and 88,142.58 is: 132,198.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,781.50 : 487,114.74 = 88,142.58 : x
  2. Step 2: Convert to fraction form
    324,781.50/487,114.74 = 88,142.58/x
  3. Step 3: Cross multiply
    324,781.50x = 487,114.74 × 88,142.58
  4. Step 4: Simplify right side
    324,781.50x = 42,935,549,939.63
  5. Step 5: Solve for x
    x = 42,935,549,939.63/324,781.50
  6. Step 6: Final answer
    x = 132,198.26

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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.