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Finding the Fourth Proportional to 266,674.20, 400,472.10 and 142,258.20

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Solution

The fourth proportional to 266,674.20, 400,472.10 and 142,258.20 is: 213,633.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,674.20 : 400,472.10 = 142,258.20 : x
  2. Step 2: Convert to fraction form
    266,674.20/400,472.10 = 142,258.20/x
  3. Step 3: Cross multiply
    266,674.20x = 400,472.10 × 142,258.20
  4. Step 4: Simplify right side
    266,674.20x = 56,970,440,096.22
  5. Step 5: Solve for x
    x = 56,970,440,096.22/266,674.20
  6. Step 6: Final answer
    x = 213,633.12

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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.