Home / 642,422.20-963,195.90-243,003.10

Finding the Fourth Proportional to 642,422.20, 963,195.90 and 243,003.10

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Solution

The fourth proportional to 642,422.20, 963,195.90 and 243,003.10 is: 364,339.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,422.20 : 963,195.90 = 243,003.10 : x
  2. Step 2: Convert to fraction form
    642,422.20/963,195.90 = 243,003.10/x
  3. Step 3: Cross multiply
    642,422.20x = 963,195.90 × 243,003.10
  4. Step 4: Simplify right side
    642,422.20x = 234,059,589,607.29
  5. Step 5: Solve for x
    x = 234,059,589,607.29/642,422.20
  6. Step 6: Final answer
    x = 364,339.20

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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.