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Finding the Fourth Proportional to 609,040.80, 913,690.80 and 188,359.20

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Solution

The fourth proportional to 609,040.80, 913,690.80 and 188,359.20 is: 282,578.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,040.80 : 913,690.80 = 188,359.20 : x
  2. Step 2: Convert to fraction form
    609,040.80/913,690.80 = 188,359.20/x
  3. Step 3: Cross multiply
    609,040.80x = 913,690.80 × 188,359.20
  4. Step 4: Simplify right side
    609,040.80x = 172,102,068,135.36
  5. Step 5: Solve for x
    x = 172,102,068,135.36/609,040.80
  6. Step 6: Final answer
    x = 282,578.88

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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.