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Finding the Fourth Proportional to 392,773.10, 542,030.68 and 223,011.02

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Solution

The fourth proportional to 392,773.10, 542,030.68 and 223,011.02 is: 307,757.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,773.10 : 542,030.68 = 223,011.02 : x
  2. Step 2: Convert to fraction form
    392,773.10/542,030.68 = 223,011.02/x
  3. Step 3: Cross multiply
    392,773.10x = 542,030.68 × 223,011.02
  4. Step 4: Simplify right side
    392,773.10x = 120,878,811,550.41
  5. Step 5: Solve for x
    x = 120,878,811,550.41/392,773.10
  6. Step 6: Final answer
    x = 307,757.36

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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.