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Finding the Fourth Proportional to 266,722.20, 399,524.40 and 124,688.70

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Solution

The fourth proportional to 266,722.20, 399,524.40 and 124,688.70 is: 186,771.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,722.20 : 399,524.40 = 124,688.70 : x
  2. Step 2: Convert to fraction form
    266,722.20/399,524.40 = 124,688.70/x
  3. Step 3: Cross multiply
    266,722.20x = 399,524.40 × 124,688.70
  4. Step 4: Simplify right side
    266,722.20x = 49,816,178,054.28
  5. Step 5: Solve for x
    x = 49,816,178,054.28/266,722.20
  6. Step 6: Final answer
    x = 186,771.77

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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.