Home / 266,136.20-398,621.10-141,331.40

Finding the Fourth Proportional to 266,136.20, 398,621.10 and 141,331.40

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Solution

The fourth proportional to 266,136.20, 398,621.10 and 141,331.40 is: 211,687.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,136.20 : 398,621.10 = 141,331.40 : x
  2. Step 2: Convert to fraction form
    266,136.20/398,621.10 = 141,331.40/x
  3. Step 3: Cross multiply
    266,136.20x = 398,621.10 × 141,331.40
  4. Step 4: Simplify right side
    266,136.20x = 56,337,678,132.54
  5. Step 5: Solve for x
    x = 56,337,678,132.54/266,136.20
  6. Step 6: Final answer
    x = 211,687.39

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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.