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Finding the Fourth Proportional to 423,940.80, 635,230.80 and 224,000.40

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Solution

The fourth proportional to 423,940.80, 635,230.80 and 224,000.40 is: 335,641.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,940.80 : 635,230.80 = 224,000.40 : x
  2. Step 2: Convert to fraction form
    423,940.80/635,230.80 = 224,000.40/x
  3. Step 3: Cross multiply
    423,940.80x = 635,230.80 × 224,000.40
  4. Step 4: Simplify right side
    423,940.80x = 142,291,953,292.32
  5. Step 5: Solve for x
    x = 142,291,953,292.32/423,940.80
  6. Step 6: Final answer
    x = 335,641.09

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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.