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Finding the Fourth Proportional to 372,712.80, 559,069.20 and 254,614.80

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Solution

The fourth proportional to 372,712.80, 559,069.20 and 254,614.80 is: 381,922.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,712.80 : 559,069.20 = 254,614.80 : x
  2. Step 2: Convert to fraction form
    372,712.80/559,069.20 = 254,614.80/x
  3. Step 3: Cross multiply
    372,712.80x = 559,069.20 × 254,614.80
  4. Step 4: Simplify right side
    372,712.80x = 142,347,292,544.16
  5. Step 5: Solve for x
    x = 142,347,292,544.16/372,712.80
  6. Step 6: Final answer
    x = 381,922.20

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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.