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Finding the Fourth Proportional to 266,766.15, 399,704.93 and 187,714.28

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Solution

The fourth proportional to 266,766.15, 399,704.93 and 187,714.28 is: 281,258.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,766.15 : 399,704.93 = 187,714.28 : x
  2. Step 2: Convert to fraction form
    266,766.15/399,704.93 = 187,714.28/x
  3. Step 3: Cross multiply
    266,766.15x = 399,704.93 × 187,714.28
  4. Step 4: Simplify right side
    266,766.15x = 75,030,320,210.30
  5. Step 5: Solve for x
    x = 75,030,320,210.30/266,766.15
  6. Step 6: Final answer
    x = 281,258.77

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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.