Home / 256,306.47-384,470.18-87,942.57

Finding the Fourth Proportional to 256,306.47, 384,470.18 and 87,942.57

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Solution

The fourth proportional to 256,306.47, 384,470.18 and 87,942.57 is: 131,917.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,306.47 : 384,470.18 = 87,942.57 : x
  2. Step 2: Convert to fraction form
    256,306.47/384,470.18 = 87,942.57/x
  3. Step 3: Cross multiply
    256,306.47x = 384,470.18 × 87,942.57
  4. Step 4: Simplify right side
    256,306.47x = 33,811,295,277.85
  5. Step 5: Solve for x
    x = 33,811,295,277.85/256,306.47
  6. Step 6: Final answer
    x = 131,917.45

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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.