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Finding the Fourth Proportional to 228,859.92, 316,085.28 and 156,137.96

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Solution

The fourth proportional to 228,859.92, 316,085.28 and 156,137.96 is: 215,646.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,859.92 : 316,085.28 = 156,137.96 : x
  2. Step 2: Convert to fraction form
    228,859.92/316,085.28 = 156,137.96/x
  3. Step 3: Cross multiply
    228,859.92x = 316,085.28 × 156,137.96
  4. Step 4: Simplify right side
    228,859.92x = 49,352,910,805.23
  5. Step 5: Solve for x
    x = 49,352,910,805.23/228,859.92
  6. Step 6: Final answer
    x = 215,646.81

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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.