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Finding the Fourth Proportional to 230,707.78, 318,398.66 and 140,042.91

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Solution

The fourth proportional to 230,707.78, 318,398.66 and 140,042.91 is: 193,272.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,707.78 : 318,398.66 = 140,042.91 : x
  2. Step 2: Convert to fraction form
    230,707.78/318,398.66 = 140,042.91/x
  3. Step 3: Cross multiply
    230,707.78x = 318,398.66 × 140,042.91
  4. Step 4: Simplify right side
    230,707.78x = 44,589,474,886.50
  5. Step 5: Solve for x
    x = 44,589,474,886.50/230,707.78
  6. Step 6: Final answer
    x = 193,272.52

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1.5x scale

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.