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Finding the Fourth Proportional to 266,914.20, 400,176.90 and 109,061.40

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Solution

The fourth proportional to 266,914.20, 400,176.90 and 109,061.40 is: 163,512.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,914.20 : 400,176.90 = 109,061.40 : x
  2. Step 2: Convert to fraction form
    266,914.20/400,176.90 = 109,061.40/x
  3. Step 3: Cross multiply
    266,914.20x = 400,176.90 × 109,061.40
  4. Step 4: Simplify right side
    266,914.20x = 43,643,852,961.66
  5. Step 5: Solve for x
    x = 43,643,852,961.66/266,914.20
  6. Step 6: Final answer
    x = 163,512.67

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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.