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Finding the Fourth Proportional to 266,502.40, 399,292.80 and 125,958.40

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Solution

The fourth proportional to 266,502.40, 399,292.80 and 125,958.40 is: 188,719.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,502.40 : 399,292.80 = 125,958.40 : x
  2. Step 2: Convert to fraction form
    266,502.40/399,292.80 = 125,958.40/x
  3. Step 3: Cross multiply
    266,502.40x = 399,292.80 × 125,958.40
  4. Step 4: Simplify right side
    266,502.40x = 50,294,282,219.52
  5. Step 5: Solve for x
    x = 50,294,282,219.52/266,502.40
  6. Step 6: Final answer
    x = 188,719.81

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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.