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Finding the Fourth Proportional to 324,729.80, 487,677.90 and 236,083.40

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Solution

The fourth proportional to 324,729.80, 487,677.90 and 236,083.40 is: 354,549.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,729.80 : 487,677.90 = 236,083.40 : x
  2. Step 2: Convert to fraction form
    324,729.80/487,677.90 = 236,083.40/x
  3. Step 3: Cross multiply
    324,729.80x = 487,677.90 × 236,083.40
  4. Step 4: Simplify right side
    324,729.80x = 115,132,656,736.86
  5. Step 5: Solve for x
    x = 115,132,656,736.86/324,729.80
  6. Step 6: Final answer
    x = 354,549.10

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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.