Home / 215,008.09-322,387.51-72,805.90

Finding the Fourth Proportional to 215,008.09, 322,387.51 and 72,805.90

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Solution

The fourth proportional to 215,008.09, 322,387.51 and 72,805.90 is: 109,166.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,008.09 : 322,387.51 = 72,805.90 : x
  2. Step 2: Convert to fraction form
    215,008.09/322,387.51 = 72,805.90/x
  3. Step 3: Cross multiply
    215,008.09x = 322,387.51 × 72,805.90
  4. Step 4: Simplify right side
    215,008.09x = 23,471,712,814.31
  5. Step 5: Solve for x
    x = 23,471,712,814.31/215,008.09
  6. Step 6: Final answer
    x = 109,166.65

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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.