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Finding the Fourth Proportional to 399,182.16, 550,871.88 and 220,334.16

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Solution

The fourth proportional to 399,182.16, 550,871.88 and 220,334.16 is: 304,061.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,182.16 : 550,871.88 = 220,334.16 : x
  2. Step 2: Convert to fraction form
    399,182.16/550,871.88 = 220,334.16/x
  3. Step 3: Cross multiply
    399,182.16x = 550,871.88 × 220,334.16
  4. Step 4: Simplify right side
    399,182.16x = 121,375,892,947.42
  5. Step 5: Solve for x
    x = 121,375,892,947.42/399,182.16
  6. Step 6: Final answer
    x = 304,061.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.