Home / 291,845.40-402,947.10-220,306.20

Finding the Fourth Proportional to 291,845.40, 402,947.10 and 220,306.20

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Solution

The fourth proportional to 291,845.40, 402,947.10 and 220,306.20 is: 304,173.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,845.40 : 402,947.10 = 220,306.20 : x
  2. Step 2: Convert to fraction form
    291,845.40/402,947.10 = 220,306.20/x
  3. Step 3: Cross multiply
    291,845.40x = 402,947.10 × 220,306.20
  4. Step 4: Simplify right side
    291,845.40x = 88,771,744,402.02
  5. Step 5: Solve for x
    x = 88,771,744,402.02/291,845.40
  6. Step 6: Final answer
    x = 304,173.87

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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.