Home / 245,318.91-338,549.70-137,888.61

Finding the Fourth Proportional to 245,318.91, 338,549.70 and 137,888.61

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Solution

The fourth proportional to 245,318.91, 338,549.70 and 137,888.61 is: 190,291.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,318.91 : 338,549.70 = 137,888.61 : x
  2. Step 2: Convert to fraction form
    245,318.91/338,549.70 = 137,888.61/x
  3. Step 3: Cross multiply
    245,318.91x = 338,549.70 × 137,888.61
  4. Step 4: Simplify right side
    245,318.91x = 46,682,147,548.92
  5. Step 5: Solve for x
    x = 46,682,147,548.92/245,318.91
  6. Step 6: Final answer
    x = 190,291.68

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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.