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Finding the Fourth Proportional to 248,168, 342,472 and 140,703.68

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Solution

The fourth proportional to 248,168, 342,472 and 140,703.68 is: 194,171.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,168 : 342,472 = 140,703.68 : x
  2. Step 2: Convert to fraction form
    248,168/342,472 = 140,703.68/x
  3. Step 3: Cross multiply
    248,168x = 342,472 × 140,703.68
  4. Step 4: Simplify right side
    248,168x = 48,187,070,696.96
  5. Step 5: Solve for x
    x = 48,187,070,696.96/248,168
  6. Step 6: Final answer
    x = 194,171.17

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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.