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Finding the Fourth Proportional to 266,196.10, 399,097.20 and 125,790.70

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Solution

The fourth proportional to 266,196.10, 399,097.20 and 125,790.70 is: 188,592.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,196.10 : 399,097.20 = 125,790.70 : x
  2. Step 2: Convert to fraction form
    266,196.10/399,097.20 = 125,790.70/x
  3. Step 3: Cross multiply
    266,196.10x = 399,097.20 × 125,790.70
  4. Step 4: Simplify right side
    266,196.10x = 50,202,716,156.04
  5. Step 5: Solve for x
    x = 50,202,716,156.04/266,196.10
  6. Step 6: Final answer
    x = 188,592.98

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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.