Home / 257,896.20-386,854.02-70,922.28

Finding the Fourth Proportional to 257,896.20, 386,854.02 and 70,922.28

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Solution

The fourth proportional to 257,896.20, 386,854.02 and 70,922.28 is: 106,386.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,896.20 : 386,854.02 = 70,922.28 : x
  2. Step 2: Convert to fraction form
    257,896.20/386,854.02 = 70,922.28/x
  3. Step 3: Cross multiply
    257,896.20x = 386,854.02 × 70,922.28
  4. Step 4: Simplify right side
    257,896.20x = 27,436,569,125.57
  5. Step 5: Solve for x
    x = 27,436,569,125.57/257,896.20
  6. Step 6: Final answer
    x = 106,386.09

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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.