Home / 257,787.90-386,822.79-100,022.58

Finding the Fourth Proportional to 257,787.90, 386,822.79 and 100,022.58

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Solution

The fourth proportional to 257,787.90, 386,822.79 and 100,022.58 is: 150,088.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,787.90 : 386,822.79 = 100,022.58 : x
  2. Step 2: Convert to fraction form
    257,787.90/386,822.79 = 100,022.58/x
  3. Step 3: Cross multiply
    257,787.90x = 386,822.79 × 100,022.58
  4. Step 4: Simplify right side
    257,787.90x = 38,691,013,458.60
  5. Step 5: Solve for x
    x = 38,691,013,458.60/257,787.90
  6. Step 6: Final answer
    x = 150,088.56

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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.