Home / 287,816.36-431,725.61-88,135.97

Finding the Fourth Proportional to 287,816.36, 431,725.61 and 88,135.97

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Solution

The fourth proportional to 287,816.36, 431,725.61 and 88,135.97 is: 132,204.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,816.36 : 431,725.61 = 88,135.97 : x
  2. Step 2: Convert to fraction form
    287,816.36/431,725.61 = 88,135.97/x
  3. Step 3: Cross multiply
    287,816.36x = 431,725.61 × 88,135.97
  4. Step 4: Simplify right side
    287,816.36x = 38,050,553,472.90
  5. Step 5: Solve for x
    x = 38,050,553,472.90/287,816.36
  6. Step 6: Final answer
    x = 132,204.28

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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.