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Finding the Fourth Proportional to 274,283.40, 411,425.10 and 218,987.40

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Solution

The fourth proportional to 274,283.40, 411,425.10 and 218,987.40 is: 328,481.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,283.40 : 411,425.10 = 218,987.40 : x
  2. Step 2: Convert to fraction form
    274,283.40/411,425.10 = 218,987.40/x
  3. Step 3: Cross multiply
    274,283.40x = 411,425.10 × 218,987.40
  4. Step 4: Simplify right side
    274,283.40x = 90,096,912,943.74
  5. Step 5: Solve for x
    x = 90,096,912,943.74/274,283.40
  6. Step 6: Final answer
    x = 328,481.10

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Similar ratio
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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.