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Finding the Fourth Proportional to 403,358.60, 605,037.90 and 270,648.20

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Solution

The fourth proportional to 403,358.60, 605,037.90 and 270,648.20 is: 405,972.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,358.60 : 605,037.90 = 270,648.20 : x
  2. Step 2: Convert to fraction form
    403,358.60/605,037.90 = 270,648.20/x
  3. Step 3: Cross multiply
    403,358.60x = 605,037.90 × 270,648.20
  4. Step 4: Simplify right side
    403,358.60x = 163,752,418,566.78
  5. Step 5: Solve for x
    x = 163,752,418,566.78/403,358.60
  6. Step 6: Final answer
    x = 405,972.30

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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.