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Finding the Fourth Proportional to 335,080.32, 502,620.16 and 85,761.92

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Solution

The fourth proportional to 335,080.32, 502,620.16 and 85,761.92 is: 128,642.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,080.32 : 502,620.16 = 85,761.92 : x
  2. Step 2: Convert to fraction form
    335,080.32/502,620.16 = 85,761.92/x
  3. Step 3: Cross multiply
    335,080.32x = 502,620.16 × 85,761.92
  4. Step 4: Simplify right side
    335,080.32x = 43,105,669,952.31
  5. Step 5: Solve for x
    x = 43,105,669,952.31/335,080.32
  6. Step 6: Final answer
    x = 128,642.80

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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.