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Finding the Fourth Proportional to 251,231.60, 376,069.80 and 145,737.20

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Solution

The fourth proportional to 251,231.60, 376,069.80 and 145,737.20 is: 218,154.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,231.60 : 376,069.80 = 145,737.20 : x
  2. Step 2: Convert to fraction form
    251,231.60/376,069.80 = 145,737.20/x
  3. Step 3: Cross multiply
    251,231.60x = 376,069.80 × 145,737.20
  4. Step 4: Simplify right side
    251,231.60x = 54,807,359,656.56
  5. Step 5: Solve for x
    x = 54,807,359,656.56/251,231.60
  6. Step 6: Final answer
    x = 218,154.72

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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.