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Finding the Fourth Proportional to 243,315.32, 335,751.12 and 135,883.02

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Solution

The fourth proportional to 243,315.32, 335,751.12 and 135,883.02 is: 187,505.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,315.32 : 335,751.12 = 135,883.02 : x
  2. Step 2: Convert to fraction form
    243,315.32/335,751.12 = 135,883.02/x
  3. Step 3: Cross multiply
    243,315.32x = 335,751.12 × 135,883.02
  4. Step 4: Simplify right side
    243,315.32x = 45,622,876,153.98
  5. Step 5: Solve for x
    x = 45,622,876,153.98/243,315.32
  6. Step 6: Final answer
    x = 187,505.15

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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.