Home / 228,943.40-315,930.78-126,972.90

Finding the Fourth Proportional to 228,943.40, 315,930.78 and 126,972.90

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Solution

The fourth proportional to 228,943.40, 315,930.78 and 126,972.90 is: 175,216.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,943.40 : 315,930.78 = 126,972.90 : x
  2. Step 2: Convert to fraction form
    228,943.40/315,930.78 = 126,972.90/x
  3. Step 3: Cross multiply
    228,943.40x = 315,930.78 × 126,972.90
  4. Step 4: Simplify right side
    228,943.40x = 40,114,647,335.86
  5. Step 5: Solve for x
    x = 40,114,647,335.86/228,943.40
  6. Step 6: Final answer
    x = 175,216.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.