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Finding the Fourth Proportional to 205,278.60, 308,148.30 and 158,737.80

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Solution

The fourth proportional to 205,278.60, 308,148.30 and 158,737.80 is: 238,284.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,278.60 : 308,148.30 = 158,737.80 : x
  2. Step 2: Convert to fraction form
    205,278.60/308,148.30 = 158,737.80/x
  3. Step 3: Cross multiply
    205,278.60x = 308,148.30 × 158,737.80
  4. Step 4: Simplify right side
    205,278.60x = 48,914,783,215.74
  5. Step 5: Solve for x
    x = 48,914,783,215.74/205,278.60
  6. Step 6: Final answer
    x = 238,284.86

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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.