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Finding the Fourth Proportional to 218,672.40, 328,008.60 and 60,925.20

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Solution

The fourth proportional to 218,672.40, 328,008.60 and 60,925.20 is: 91,387.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,672.40 : 328,008.60 = 60,925.20 : x
  2. Step 2: Convert to fraction form
    218,672.40/328,008.60 = 60,925.20/x
  3. Step 3: Cross multiply
    218,672.40x = 328,008.60 × 60,925.20
  4. Step 4: Simplify right side
    218,672.40x = 19,983,989,556.72
  5. Step 5: Solve for x
    x = 19,983,989,556.72/218,672.40
  6. Step 6: Final answer
    x = 91,387.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.