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Finding the Fourth Proportional to 660,880.60, 991,319.06 and 187,566.42

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Solution

The fourth proportional to 660,880.60, 991,319.06 and 187,566.42 is: 281,349.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,880.60 : 991,319.06 = 187,566.42 : x
  2. Step 2: Convert to fraction form
    660,880.60/991,319.06 = 187,566.42/x
  3. Step 3: Cross multiply
    660,880.60x = 991,319.06 × 187,566.42
  4. Step 4: Simplify right side
    660,880.60x = 185,938,167,161.97
  5. Step 5: Solve for x
    x = 185,938,167,161.97/660,880.60
  6. Step 6: Final answer
    x = 281,349.11

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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.