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Finding the Fourth Proportional to 243,344.52, 335,811.90 and 135,916.08

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Solution

The fourth proportional to 243,344.52, 335,811.90 and 135,916.08 is: 187,562.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,344.52 : 335,811.90 = 135,916.08 : x
  2. Step 2: Convert to fraction form
    243,344.52/335,811.90 = 135,916.08/x
  3. Step 3: Cross multiply
    243,344.52x = 335,811.90 × 135,916.08
  4. Step 4: Simplify right side
    243,344.52x = 45,642,237,065.35
  5. Step 5: Solve for x
    x = 45,642,237,065.35/243,344.52
  6. Step 6: Final answer
    x = 187,562.21

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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.