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Finding the Fourth Proportional to 218,137.42, 300,931.24 and 127,452.61

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Solution

The fourth proportional to 218,137.42, 300,931.24 and 127,452.61 is: 175,827.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,137.42 : 300,931.24 = 127,452.61 : x
  2. Step 2: Convert to fraction form
    218,137.42/300,931.24 = 127,452.61/x
  3. Step 3: Cross multiply
    218,137.42x = 300,931.24 × 127,452.61
  4. Step 4: Simplify right side
    218,137.42x = 38,354,471,968.54
  5. Step 5: Solve for x
    x = 38,354,471,968.54/218,137.42
  6. Step 6: Final answer
    x = 175,827.11

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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.