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Finding the Fourth Proportional to 235,420.85, 324,877.14 and 127,989.93

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Solution

The fourth proportional to 235,420.85, 324,877.14 and 127,989.93 is: 176,624.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,420.85 : 324,877.14 = 127,989.93 : x
  2. Step 2: Convert to fraction form
    235,420.85/324,877.14 = 127,989.93/x
  3. Step 3: Cross multiply
    235,420.85x = 324,877.14 × 127,989.93
  4. Step 4: Simplify right side
    235,420.85x = 41,581,002,407.20
  5. Step 5: Solve for x
    x = 41,581,002,407.20/235,420.85
  6. Step 6: Final answer
    x = 176,624.13

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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.