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Finding the Fourth Proportional to 239,608.01, 330,647.91 and 137,561.65

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Solution

The fourth proportional to 239,608.01, 330,647.91 and 137,561.65 is: 189,828.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,608.01 : 330,647.91 = 137,561.65 : x
  2. Step 2: Convert to fraction form
    239,608.01/330,647.91 = 137,561.65/x
  3. Step 3: Cross multiply
    239,608.01x = 330,647.91 × 137,561.65
  4. Step 4: Simplify right side
    239,608.01x = 45,484,471,499.96
  5. Step 5: Solve for x
    x = 45,484,471,499.96/239,608.01
  6. Step 6: Final answer
    x = 189,828.68

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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.