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Finding the Fourth Proportional to 256,510.27, 384,673.14 and 87,986.88

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Solution

The fourth proportional to 256,510.27, 384,673.14 and 87,986.88 is: 131,948.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,510.27 : 384,673.14 = 87,986.88 : x
  2. Step 2: Convert to fraction form
    256,510.27/384,673.14 = 87,986.88/x
  3. Step 3: Cross multiply
    256,510.27x = 384,673.14 × 87,986.88
  4. Step 4: Simplify right side
    256,510.27x = 33,846,190,366.57
  5. Step 5: Solve for x
    x = 33,846,190,366.57/256,510.27
  6. Step 6: Final answer
    x = 131,948.68

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1.5x scale

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.