Home / 420,310.40-580,177.96-248,229.04

Finding the Fourth Proportional to 420,310.40, 580,177.96 and 248,229.04

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Solution

The fourth proportional to 420,310.40, 580,177.96 and 248,229.04 is: 342,644.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,310.40 : 580,177.96 = 248,229.04 : x
  2. Step 2: Convert to fraction form
    420,310.40/580,177.96 = 248,229.04/x
  3. Step 3: Cross multiply
    420,310.40x = 580,177.96 × 248,229.04
  4. Step 4: Simplify right side
    420,310.40x = 144,017,018,039.96
  5. Step 5: Solve for x
    x = 144,017,018,039.96/420,310.40
  6. Step 6: Final answer
    x = 342,644.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.