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Finding the Fourth Proportional to 228,545.76, 315,363.60 and 127,943.76

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Solution

The fourth proportional to 228,545.76, 315,363.60 and 127,943.76 is: 176,545.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,545.76 : 315,363.60 = 127,943.76 : x
  2. Step 2: Convert to fraction form
    228,545.76/315,363.60 = 127,943.76/x
  3. Step 3: Cross multiply
    228,545.76x = 315,363.60 × 127,943.76
  4. Step 4: Simplify right side
    228,545.76x = 40,348,804,751.14
  5. Step 5: Solve for x
    x = 40,348,804,751.14/228,545.76
  6. Step 6: Final answer
    x = 176,545.85

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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.