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Finding the Fourth Proportional to 243,612, 336,216.96 and 143,010

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Solution

The fourth proportional to 243,612, 336,216.96 and 143,010 is: 197,372.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,612 : 336,216.96 = 143,010 : x
  2. Step 2: Convert to fraction form
    243,612/336,216.96 = 143,010/x
  3. Step 3: Cross multiply
    243,612x = 336,216.96 × 143,010
  4. Step 4: Simplify right side
    243,612x = 48,082,387,449.60
  5. Step 5: Solve for x
    x = 48,082,387,449.60/243,612
  6. Step 6: Final answer
    x = 197,372.82

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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.