Home / 443,826.80-665,351.40-266,145.20

Finding the Fourth Proportional to 443,826.80, 665,351.40 and 266,145.20

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Solution

The fourth proportional to 443,826.80, 665,351.40 and 266,145.20 is: 398,984.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,826.80 : 665,351.40 = 266,145.20 : x
  2. Step 2: Convert to fraction form
    443,826.80/665,351.40 = 266,145.20/x
  3. Step 3: Cross multiply
    443,826.80x = 665,351.40 × 266,145.20
  4. Step 4: Simplify right side
    443,826.80x = 177,080,081,423.28
  5. Step 5: Solve for x
    x = 177,080,081,423.28/443,826.80
  6. Step 6: Final answer
    x = 398,984.65

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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.