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Finding the Fourth Proportional to 269,686.80, 404,530.20 and 266,187.60

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Solution

The fourth proportional to 269,686.80, 404,530.20 and 266,187.60 is: 399,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,686.80 : 404,530.20 = 266,187.60 : x
  2. Step 2: Convert to fraction form
    269,686.80/404,530.20 = 266,187.60/x
  3. Step 3: Cross multiply
    269,686.80x = 404,530.20 × 266,187.60
  4. Step 4: Simplify right side
    269,686.80x = 107,680,923,065.52
  5. Step 5: Solve for x
    x = 107,680,923,065.52/269,686.80
  6. Step 6: Final answer
    x = 399,281.40

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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.