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Finding the Fourth Proportional to 335,139.75, 502,426.42 and 145,456.68

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Solution

The fourth proportional to 335,139.75, 502,426.42 and 145,456.68 is: 218,062.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,139.75 : 502,426.42 = 145,456.68 : x
  2. Step 2: Convert to fraction form
    335,139.75/502,426.42 = 145,456.68/x
  3. Step 3: Cross multiply
    335,139.75x = 502,426.42 × 145,456.68
  4. Step 4: Simplify right side
    335,139.75x = 73,081,278,633.84
  5. Step 5: Solve for x
    x = 73,081,278,633.84/335,139.75
  6. Step 6: Final answer
    x = 218,062.10

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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.