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Finding the Fourth Proportional to 287,844.48, 431,787.48 and 88,138.92

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Solution

The fourth proportional to 287,844.48, 431,787.48 and 88,138.92 is: 132,214.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,844.48 : 431,787.48 = 88,138.92 : x
  2. Step 2: Convert to fraction form
    287,844.48/431,787.48 = 88,138.92/x
  3. Step 3: Cross multiply
    287,844.48x = 431,787.48 × 88,138.92
  4. Step 4: Simplify right side
    287,844.48x = 38,057,282,156.72
  5. Step 5: Solve for x
    x = 38,057,282,156.72/287,844.48
  6. Step 6: Final answer
    x = 132,214.74

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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.