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Finding the Fourth Proportional to 287,908.59, 431,926.07 and 88,244.00

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Solution

The fourth proportional to 287,908.59, 431,926.07 and 88,244.00 is: 132,385.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,908.59 : 431,926.07 = 88,244.00 : x
  2. Step 2: Convert to fraction form
    287,908.59/431,926.07 = 88,244.00/x
  3. Step 3: Cross multiply
    287,908.59x = 431,926.07 × 88,244.00
  4. Step 4: Simplify right side
    287,908.59x = 38,114,881,520.23
  5. Step 5: Solve for x
    x = 38,114,881,520.23/287,908.59
  6. Step 6: Final answer
    x = 132,385.36

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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.