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Finding the Fourth Proportional to 266,448.84, 399,870.36 and 126,207.78

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Solution

The fourth proportional to 266,448.84, 399,870.36 and 126,207.78 is: 189,405.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,448.84 : 399,870.36 = 126,207.78 : x
  2. Step 2: Convert to fraction form
    266,448.84/399,870.36 = 126,207.78/x
  3. Step 3: Cross multiply
    266,448.84x = 399,870.36 × 126,207.78
  4. Step 4: Simplify right side
    266,448.84x = 50,466,750,423.40
  5. Step 5: Solve for x
    x = 50,466,750,423.40/266,448.84
  6. Step 6: Final answer
    x = 189,405.03

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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.