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Finding the Fourth Proportional to 239,587.96, 330,631.70 and 137,633.16

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Solution

The fourth proportional to 239,587.96, 330,631.70 and 137,633.16 is: 189,933.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,587.96 : 330,631.70 = 137,633.16 : x
  2. Step 2: Convert to fraction form
    239,587.96/330,631.70 = 137,633.16/x
  3. Step 3: Cross multiply
    239,587.96x = 330,631.70 × 137,633.16
  4. Step 4: Simplify right side
    239,587.96x = 45,505,885,667.17
  5. Step 5: Solve for x
    x = 45,505,885,667.17/239,587.96
  6. Step 6: Final answer
    x = 189,933.94

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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.