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Finding the Fourth Proportional to 252,123.55, 347,930.50 and 138,946.30

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Solution

The fourth proportional to 252,123.55, 347,930.50 and 138,946.30 is: 191,745.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,123.55 : 347,930.50 = 138,946.30 : x
  2. Step 2: Convert to fraction form
    252,123.55/347,930.50 = 138,946.30/x
  3. Step 3: Cross multiply
    252,123.55x = 347,930.50 × 138,946.30
  4. Step 4: Simplify right side
    252,123.55x = 48,343,655,632.15
  5. Step 5: Solve for x
    x = 48,343,655,632.15/252,123.55
  6. Step 6: Final answer
    x = 191,745.89

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