Home / 287,529.39-431,320.01-77,165.91

Finding the Fourth Proportional to 287,529.39, 431,320.01 and 77,165.91

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Solution

The fourth proportional to 287,529.39, 431,320.01 and 77,165.91 is: 115,755.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,529.39 : 431,320.01 = 77,165.91 : x
  2. Step 2: Convert to fraction form
    287,529.39/431,320.01 = 77,165.91/x
  3. Step 3: Cross multiply
    287,529.39x = 431,320.01 × 77,165.91
  4. Step 4: Simplify right side
    287,529.39x = 33,283,200,687.03
  5. Step 5: Solve for x
    x = 33,283,200,687.03/287,529.39
  6. Step 6: Final answer
    x = 115,755.82

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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.