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Finding the Fourth Proportional to 266,313.90, 399,472.38 and 88,820.40

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Solution

The fourth proportional to 266,313.90, 399,472.38 and 88,820.40 is: 133,231.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,313.90 : 399,472.38 = 88,820.40 : x
  2. Step 2: Convert to fraction form
    266,313.90/399,472.38 = 88,820.40/x
  3. Step 3: Cross multiply
    266,313.90x = 399,472.38 × 88,820.40
  4. Step 4: Simplify right side
    266,313.90x = 35,481,296,247.48
  5. Step 5: Solve for x
    x = 35,481,296,247.48/266,313.90
  6. Step 6: Final answer
    x = 133,231.11

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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.