Home / 266,716.20-399,515.40-124,682.70

Finding the Fourth Proportional to 266,716.20, 399,515.40 and 124,682.70

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Solution

The fourth proportional to 266,716.20, 399,515.40 and 124,682.70 is: 186,762.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,716.20 : 399,515.40 = 124,682.70 : x
  2. Step 2: Convert to fraction form
    266,716.20/399,515.40 = 124,682.70/x
  3. Step 3: Cross multiply
    266,716.20x = 399,515.40 × 124,682.70
  4. Step 4: Simplify right side
    266,716.20x = 49,812,658,763.58
  5. Step 5: Solve for x
    x = 49,812,658,763.58/266,716.20
  6. Step 6: Final answer
    x = 186,762.78

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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.