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Finding the Fourth Proportional to 251,691.60, 377,148.60 and 218,254.80

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Solution

The fourth proportional to 251,691.60, 377,148.60 and 218,254.80 is: 327,045.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,691.60 : 377,148.60 = 218,254.80 : x
  2. Step 2: Convert to fraction form
    251,691.60/377,148.60 = 218,254.80/x
  3. Step 3: Cross multiply
    251,691.60x = 377,148.60 × 218,254.80
  4. Step 4: Simplify right side
    251,691.60x = 82,314,492,263.28
  5. Step 5: Solve for x
    x = 82,314,492,263.28/251,691.60
  6. Step 6: Final answer
    x = 327,045.05

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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.