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Finding the Fourth Proportional to 443,725.80, 665,199.90 and 266,044.20

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Solution

The fourth proportional to 443,725.80, 665,199.90 and 266,044.20 is: 398,833.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,725.80 : 665,199.90 = 266,044.20 : x
  2. Step 2: Convert to fraction form
    443,725.80/665,199.90 = 266,044.20/x
  3. Step 3: Cross multiply
    443,725.80x = 665,199.90 × 266,044.20
  4. Step 4: Simplify right side
    443,725.80x = 176,972,575,235.58
  5. Step 5: Solve for x
    x = 176,972,575,235.58/443,725.80
  6. Step 6: Final answer
    x = 398,833.19

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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.