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Finding the Fourth Proportional to 243,134.51, 335,703.42 and 157,144.41

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Solution

The fourth proportional to 243,134.51, 335,703.42 and 157,144.41 is: 216,974.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,134.51 : 335,703.42 = 157,144.41 : x
  2. Step 2: Convert to fraction form
    243,134.51/335,703.42 = 157,144.41/x
  3. Step 3: Cross multiply
    243,134.51x = 335,703.42 × 157,144.41
  4. Step 4: Simplify right side
    243,134.51x = 52,753,915,870.88
  5. Step 5: Solve for x
    x = 52,753,915,870.88/243,134.51
  6. Step 6: Final answer
    x = 216,974.20

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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.