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Finding the Fourth Proportional to 660,748.62, 991,160.46 and 187,396.50

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Solution

The fourth proportional to 660,748.62, 991,160.46 and 187,396.50 is: 281,105.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,748.62 : 991,160.46 = 187,396.50 : x
  2. Step 2: Convert to fraction form
    660,748.62/991,160.46 = 187,396.50/x
  3. Step 3: Cross multiply
    660,748.62x = 991,160.46 × 187,396.50
  4. Step 4: Simplify right side
    660,748.62x = 185,740,001,142.39
  5. Step 5: Solve for x
    x = 185,740,001,142.39/660,748.62
  6. Step 6: Final answer
    x = 281,105.39

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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.