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Finding the Fourth Proportional to 404,294.40, 606,940.80 and 254,534.40

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Solution

The fourth proportional to 404,294.40, 606,940.80 and 254,534.40 is: 382,115.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,294.40 : 606,940.80 = 254,534.40 : x
  2. Step 2: Convert to fraction form
    404,294.40/606,940.80 = 254,534.40/x
  3. Step 3: Cross multiply
    404,294.40x = 606,940.80 × 254,534.40
  4. Step 4: Simplify right side
    404,294.40x = 154,487,312,363.52
  5. Step 5: Solve for x
    x = 154,487,312,363.52/404,294.40
  6. Step 6: Final answer
    x = 382,115.88

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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.