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Finding the Fourth Proportional to 243,149.56, 335,602.38 and 142,579.96

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Solution

The fourth proportional to 243,149.56, 335,602.38 and 142,579.96 is: 196,793.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,149.56 : 335,602.38 = 142,579.96 : x
  2. Step 2: Convert to fraction form
    243,149.56/335,602.38 = 142,579.96/x
  3. Step 3: Cross multiply
    243,149.56x = 335,602.38 × 142,579.96
  4. Step 4: Simplify right side
    243,149.56x = 47,850,173,916.30
  5. Step 5: Solve for x
    x = 47,850,173,916.30/243,149.56
  6. Step 6: Final answer
    x = 196,793.18

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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.