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Finding the Fourth Proportional to 443,372.20, 665,058.30 and 266,079.40

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Solution

The fourth proportional to 443,372.20, 665,058.30 and 266,079.40 is: 399,119.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,372.20 : 665,058.30 = 266,079.40 : x
  2. Step 2: Convert to fraction form
    443,372.20/665,058.30 = 266,079.40/x
  3. Step 3: Cross multiply
    443,372.20x = 665,058.30 × 266,079.40
  4. Step 4: Simplify right side
    443,372.20x = 176,958,313,429.02
  5. Step 5: Solve for x
    x = 176,958,313,429.02/443,372.20
  6. Step 6: Final answer
    x = 399,119.10

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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.