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Finding the Fourth Proportional to 366,859.20, 550,288.80 and 266,475.90

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Solution

The fourth proportional to 366,859.20, 550,288.80 and 266,475.90 is: 399,713.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,859.20 : 550,288.80 = 266,475.90 : x
  2. Step 2: Convert to fraction form
    366,859.20/550,288.80 = 266,475.90/x
  3. Step 3: Cross multiply
    366,859.20x = 550,288.80 × 266,475.90
  4. Step 4: Simplify right side
    366,859.20x = 146,638,703,239.92
  5. Step 5: Solve for x
    x = 146,638,703,239.92/366,859.20
  6. Step 6: Final answer
    x = 399,713.85

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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.