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Finding the Fourth Proportional to 393,444.44, 542,999.40 and 223,704.08

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Solution

The fourth proportional to 393,444.44, 542,999.40 and 223,704.08 is: 308,737.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,444.44 : 542,999.40 = 223,704.08 : x
  2. Step 2: Convert to fraction form
    393,444.44/542,999.40 = 223,704.08/x
  3. Step 3: Cross multiply
    393,444.44x = 542,999.40 × 223,704.08
  4. Step 4: Simplify right side
    393,444.44x = 121,471,181,217.55
  5. Step 5: Solve for x
    x = 121,471,181,217.55/393,444.44
  6. Step 6: Final answer
    x = 308,737.83

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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.