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Finding the Fourth Proportional to 228,479.67, 315,301.91 and 127,877.67

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Solution

The fourth proportional to 228,479.67, 315,301.91 and 127,877.67 is: 176,471.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,479.67 : 315,301.91 = 127,877.67 : x
  2. Step 2: Convert to fraction form
    228,479.67/315,301.91 = 127,877.67/x
  3. Step 3: Cross multiply
    228,479.67x = 315,301.91 × 127,877.67
  4. Step 4: Simplify right side
    228,479.67x = 40,320,072,957.96
  5. Step 5: Solve for x
    x = 40,320,072,957.96/228,479.67
  6. Step 6: Final answer
    x = 176,471.16

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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.