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Finding the Fourth Proportional to 228,290.93, 315,168.17 and 137,669.85

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Solution

The fourth proportional to 228,290.93, 315,168.17 and 137,669.85 is: 190,060.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,290.93 : 315,168.17 = 137,669.85 : x
  2. Step 2: Convert to fraction form
    228,290.93/315,168.17 = 137,669.85/x
  3. Step 3: Cross multiply
    228,290.93x = 315,168.17 × 137,669.85
  4. Step 4: Simplify right side
    228,290.93x = 43,389,154,688.67
  5. Step 5: Solve for x
    x = 43,389,154,688.67/228,290.93
  6. Step 6: Final answer
    x = 190,060.79

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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.