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Finding the Fourth Proportional to 403,046.20, 605,034.90 and 216,422.20

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Solution

The fourth proportional to 403,046.20, 605,034.90 and 216,422.20 is: 324,883.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,046.20 : 605,034.90 = 216,422.20 : x
  2. Step 2: Convert to fraction form
    403,046.20/605,034.90 = 216,422.20/x
  3. Step 3: Cross multiply
    403,046.20x = 605,034.90 × 216,422.20
  4. Step 4: Simplify right side
    403,046.20x = 130,942,984,134.78
  5. Step 5: Solve for x
    x = 130,942,984,134.78/403,046.20
  6. Step 6: Final answer
    x = 324,883.31

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1.5x scale

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.