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Finding the Fourth Proportional to 187,363.20, 280,737.60 and 156,028.80

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Solution

The fourth proportional to 187,363.20, 280,737.60 and 156,028.80 is: 233,787.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,363.20 : 280,737.60 = 156,028.80 : x
  2. Step 2: Convert to fraction form
    187,363.20/280,737.60 = 156,028.80/x
  3. Step 3: Cross multiply
    187,363.20x = 280,737.60 × 156,028.80
  4. Step 4: Simplify right side
    187,363.20x = 43,803,150,842.88
  5. Step 5: Solve for x
    x = 43,803,150,842.88/187,363.20
  6. Step 6: Final answer
    x = 233,787.38

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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.