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Finding the Fourth Proportional to 542,659.50, 748,870.11 and 300,979.08

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Solution

The fourth proportional to 542,659.50, 748,870.11 and 300,979.08 is: 415,351.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,659.50 : 748,870.11 = 300,979.08 : x
  2. Step 2: Convert to fraction form
    542,659.50/748,870.11 = 300,979.08/x
  3. Step 3: Cross multiply
    542,659.50x = 748,870.11 × 300,979.08
  4. Step 4: Simplify right side
    542,659.50x = 225,394,236,747.30
  5. Step 5: Solve for x
    x = 225,394,236,747.30/542,659.50
  6. Step 6: Final answer
    x = 415,351.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.