Home / 257,736.28-386,631.16-89,256.28

Finding the Fourth Proportional to 257,736.28, 386,631.16 and 89,256.28

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Solution

The fourth proportional to 257,736.28, 386,631.16 and 89,256.28 is: 133,893.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,736.28 : 386,631.16 = 89,256.28 : x
  2. Step 2: Convert to fraction form
    257,736.28/386,631.16 = 89,256.28/x
  3. Step 3: Cross multiply
    257,736.28x = 386,631.16 × 89,256.28
  4. Step 4: Simplify right side
    257,736.28x = 34,509,259,073.68
  5. Step 5: Solve for x
    x = 34,509,259,073.68/257,736.28
  6. Step 6: Final answer
    x = 133,893.68

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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.