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Finding the Fourth Proportional to 315,954.05, 435,886.04 and 220,516.61

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Solution

The fourth proportional to 315,954.05, 435,886.04 and 220,516.61 is: 304,221.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,954.05 : 435,886.04 = 220,516.61 : x
  2. Step 2: Convert to fraction form
    315,954.05/435,886.04 = 220,516.61/x
  3. Step 3: Cross multiply
    315,954.05x = 435,886.04 × 220,516.61
  4. Step 4: Simplify right side
    315,954.05x = 96,120,108,605.11
  5. Step 5: Solve for x
    x = 96,120,108,605.11/315,954.05
  6. Step 6: Final answer
    x = 304,221.80

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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.