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Finding the Fourth Proportional to 666,978.44, 1,000,470.03 and 161,539.76

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Solution

The fourth proportional to 666,978.44, 1,000,470.03 and 161,539.76 is: 242,310.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,978.44 : 1,000,470.03 = 161,539.76 : x
  2. Step 2: Convert to fraction form
    666,978.44/1,000,470.03 = 161,539.76/x
  3. Step 3: Cross multiply
    666,978.44x = 1,000,470.03 × 161,539.76
  4. Step 4: Simplify right side
    666,978.44x = 161,615,691,034.57
  5. Step 5: Solve for x
    x = 161,615,691,034.57/666,978.44
  6. Step 6: Final answer
    x = 242,310.22

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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.