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Finding the Fourth Proportional to 404,620.30, 606,930.45 and 254,373.40

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Solution

The fourth proportional to 404,620.30, 606,930.45 and 254,373.40 is: 381,560.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,620.30 : 606,930.45 = 254,373.40 : x
  2. Step 2: Convert to fraction form
    404,620.30/606,930.45 = 254,373.40/x
  3. Step 3: Cross multiply
    404,620.30x = 606,930.45 × 254,373.40
  4. Step 4: Simplify right side
    404,620.30x = 154,386,962,130.03
  5. Step 5: Solve for x
    x = 154,386,962,130.03/404,620.30
  6. Step 6: Final answer
    x = 381,560.10

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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.