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Finding the Fourth Proportional to 231,029.48, 318,724.26 and 155,446.76

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Solution

The fourth proportional to 231,029.48, 318,724.26 and 155,446.76 is: 214,451.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,029.48 : 318,724.26 = 155,446.76 : x
  2. Step 2: Convert to fraction form
    231,029.48/318,724.26 = 155,446.76/x
  3. Step 3: Cross multiply
    231,029.48x = 318,724.26 × 155,446.76
  4. Step 4: Simplify right side
    231,029.48x = 49,544,653,550.40
  5. Step 5: Solve for x
    x = 49,544,653,550.40/231,029.48
  6. Step 6: Final answer
    x = 214,451.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.