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Finding the Fourth Proportional to 228,426.78, 315,223.95 and 125,060.76

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Solution

The fourth proportional to 228,426.78, 315,223.95 and 125,060.76 is: 172,581.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,426.78 : 315,223.95 = 125,060.76 : x
  2. Step 2: Convert to fraction form
    228,426.78/315,223.95 = 125,060.76/x
  3. Step 3: Cross multiply
    228,426.78x = 315,223.95 × 125,060.76
  4. Step 4: Simplify right side
    228,426.78x = 39,422,147,226.18
  5. Step 5: Solve for x
    x = 39,422,147,226.18/228,426.78
  6. Step 6: Final answer
    x = 172,581.11

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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.