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Finding the Fourth Proportional to 542,349.07, 748,363.05 and 300,631.50

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Solution

The fourth proportional to 542,349.07, 748,363.05 and 300,631.50 is: 414,827.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,349.07 : 748,363.05 = 300,631.50 : x
  2. Step 2: Convert to fraction form
    542,349.07/748,363.05 = 300,631.50/x
  3. Step 3: Cross multiply
    542,349.07x = 748,363.05 × 300,631.50
  4. Step 4: Simplify right side
    542,349.07x = 224,981,506,266.08
  5. Step 5: Solve for x
    x = 224,981,506,266.08/542,349.07
  6. Step 6: Final answer
    x = 414,827.87

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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.