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Finding the Fourth Proportional to 453,506.20, 680,234.10 and 137,938.30

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Solution

The fourth proportional to 453,506.20, 680,234.10 and 137,938.30 is: 206,899.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,506.20 : 680,234.10 = 137,938.30 : x
  2. Step 2: Convert to fraction form
    453,506.20/680,234.10 = 137,938.30/x
  3. Step 3: Cross multiply
    453,506.20x = 680,234.10 × 137,938.30
  4. Step 4: Simplify right side
    453,506.20x = 93,830,335,356.03
  5. Step 5: Solve for x
    x = 93,830,335,356.03/453,506.20
  6. Step 6: Final answer
    x = 206,899.79

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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.