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Finding the Fourth Proportional to 382,642.20, 573,963.30 and 268,480.80

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Solution

The fourth proportional to 382,642.20, 573,963.30 and 268,480.80 is: 402,721.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,642.20 : 573,963.30 = 268,480.80 : x
  2. Step 2: Convert to fraction form
    382,642.20/573,963.30 = 268,480.80/x
  3. Step 3: Cross multiply
    382,642.20x = 573,963.30 × 268,480.80
  4. Step 4: Simplify right side
    382,642.20x = 154,098,125,954.64
  5. Step 5: Solve for x
    x = 154,098,125,954.64/382,642.20
  6. Step 6: Final answer
    x = 402,721.20

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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.