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Finding the Fourth Proportional to 393,237.32, 542,713.57 and 223,496.96

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Solution

The fourth proportional to 393,237.32, 542,713.57 and 223,496.96 is: 308,451.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,237.32 : 542,713.57 = 223,496.96 : x
  2. Step 2: Convert to fraction form
    393,237.32/542,713.57 = 223,496.96/x
  3. Step 3: Cross multiply
    393,237.32x = 542,713.57 × 223,496.96
  4. Step 4: Simplify right side
    393,237.32x = 121,294,829,773.44
  5. Step 5: Solve for x
    x = 121,294,829,773.44/393,237.32
  6. Step 6: Final answer
    x = 308,451.98

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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.