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Finding the Fourth Proportional to 366,872.20, 550,308.30 and 266,488.90

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Solution

The fourth proportional to 366,872.20, 550,308.30 and 266,488.90 is: 399,733.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,872.20 : 550,308.30 = 266,488.90 : x
  2. Step 2: Convert to fraction form
    366,872.20/550,308.30 = 266,488.90/x
  3. Step 3: Cross multiply
    366,872.20x = 550,308.30 × 266,488.90
  4. Step 4: Simplify right side
    366,872.20x = 146,651,053,527.87
  5. Step 5: Solve for x
    x = 146,651,053,527.87/366,872.20
  6. Step 6: Final answer
    x = 399,733.35

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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.