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Finding the Fourth Proportional to 287,684.25, 431,604.72 and 88,000.20

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Solution

The fourth proportional to 287,684.25, 431,604.72 and 88,000.20 is: 132,024.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,684.25 : 431,604.72 = 88,000.20 : x
  2. Step 2: Convert to fraction form
    287,684.25/431,604.72 = 88,000.20/x
  3. Step 3: Cross multiply
    287,684.25x = 431,604.72 × 88,000.20
  4. Step 4: Simplify right side
    287,684.25x = 37,981,301,680.94
  5. Step 5: Solve for x
    x = 37,981,301,680.94/287,684.25
  6. Step 6: Final answer
    x = 132,024.27

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1.5x scale

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.