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Finding the Fourth Proportional to 609,987.20, 914,980.80 and 166,755.20

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Solution

The fourth proportional to 609,987.20, 914,980.80 and 166,755.20 is: 250,132.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,987.20 : 914,980.80 = 166,755.20 : x
  2. Step 2: Convert to fraction form
    609,987.20/914,980.80 = 166,755.20/x
  3. Step 3: Cross multiply
    609,987.20x = 914,980.80 × 166,755.20
  4. Step 4: Simplify right side
    609,987.20x = 152,577,806,300.16
  5. Step 5: Solve for x
    x = 152,577,806,300.16/609,987.20
  6. Step 6: Final answer
    x = 250,132.80

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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.