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Finding the Fourth Proportional to 243,064.62, 335,428.56 and 135,633.51

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Solution

The fourth proportional to 243,064.62, 335,428.56 and 135,633.51 is: 187,173.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,064.62 : 335,428.56 = 135,633.51 : x
  2. Step 2: Convert to fraction form
    243,064.62/335,428.56 = 135,633.51/x
  3. Step 3: Cross multiply
    243,064.62x = 335,428.56 × 135,633.51
  4. Step 4: Simplify right side
    243,064.62x = 45,495,352,947.05
  5. Step 5: Solve for x
    x = 45,495,352,947.05/243,064.62
  6. Step 6: Final answer
    x = 187,173.90

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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.