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Finding the Fourth Proportional to 453,993.90, 680,990.85 and 121,569.90

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Solution

The fourth proportional to 453,993.90, 680,990.85 and 121,569.90 is: 182,354.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,993.90 : 680,990.85 = 121,569.90 : x
  2. Step 2: Convert to fraction form
    453,993.90/680,990.85 = 121,569.90/x
  3. Step 3: Cross multiply
    453,993.90x = 680,990.85 × 121,569.90
  4. Step 4: Simplify right side
    453,993.90x = 82,787,989,535.42
  5. Step 5: Solve for x
    x = 82,787,989,535.42/453,993.90
  6. Step 6: Final answer
    x = 182,354.85

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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.