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Finding the Fourth Proportional to 248,808.06, 343,355.13 and 135,630.90

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Solution

The fourth proportional to 248,808.06, 343,355.13 and 135,630.90 is: 187,170.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,808.06 : 343,355.13 = 135,630.90 : x
  2. Step 2: Convert to fraction form
    248,808.06/343,355.13 = 135,630.90/x
  3. Step 3: Cross multiply
    248,808.06x = 343,355.13 × 135,630.90
  4. Step 4: Simplify right side
    248,808.06x = 46,569,565,301.52
  5. Step 5: Solve for x
    x = 46,569,565,301.52/248,808.06
  6. Step 6: Final answer
    x = 187,170.65

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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.