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Finding the Fourth Proportional to 437,963.80, 655,908.90 and 270,002.20

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Solution

The fourth proportional to 437,963.80, 655,908.90 and 270,002.20 is: 404,364.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,963.80 : 655,908.90 = 270,002.20 : x
  2. Step 2: Convert to fraction form
    437,963.80/655,908.90 = 270,002.20/x
  3. Step 3: Cross multiply
    437,963.80x = 655,908.90 × 270,002.20
  4. Step 4: Simplify right side
    437,963.80x = 177,096,845,999.58
  5. Step 5: Solve for x
    x = 177,096,845,999.58/437,963.80
  6. Step 6: Final answer
    x = 404,364.12

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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.