Home / 266,056.20-399,197.70-139,793.40

Finding the Fourth Proportional to 266,056.20, 399,197.70 and 139,793.40

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Solution

The fourth proportional to 266,056.20, 399,197.70 and 139,793.40 is: 209,749.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,056.20 : 399,197.70 = 139,793.40 : x
  2. Step 2: Convert to fraction form
    266,056.20/399,197.70 = 139,793.40/x
  3. Step 3: Cross multiply
    266,056.20x = 399,197.70 × 139,793.40
  4. Step 4: Simplify right side
    266,056.20x = 55,805,203,755.18
  5. Step 5: Solve for x
    x = 55,805,203,755.18/266,056.20
  6. Step 6: Final answer
    x = 209,749.68

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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.