Home / 257,270.40-385,076.16-132,439.68

Finding the Fourth Proportional to 257,270.40, 385,076.16 and 132,439.68

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Solution

The fourth proportional to 257,270.40, 385,076.16 and 132,439.68 is: 198,232.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,270.40 : 385,076.16 = 132,439.68 : x
  2. Step 2: Convert to fraction form
    257,270.40/385,076.16 = 132,439.68/x
  3. Step 3: Cross multiply
    257,270.40x = 385,076.16 × 132,439.68
  4. Step 4: Simplify right side
    257,270.40x = 50,999,363,406.03
  5. Step 5: Solve for x
    x = 50,999,363,406.03/257,270.40
  6. Step 6: Final answer
    x = 198,232.53

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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.