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Finding the Fourth Proportional to 609,121.80, 913,812.30 and 188,440.20

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Solution

The fourth proportional to 609,121.80, 913,812.30 and 188,440.20 is: 282,700.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,121.80 : 913,812.30 = 188,440.20 : x
  2. Step 2: Convert to fraction form
    609,121.80/913,812.30 = 188,440.20/x
  3. Step 3: Cross multiply
    609,121.80x = 913,812.30 × 188,440.20
  4. Step 4: Simplify right side
    609,121.80x = 172,198,972,574.46
  5. Step 5: Solve for x
    x = 172,198,972,574.46/609,121.80
  6. Step 6: Final answer
    x = 282,700.39

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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.