Home / 386,513.38-579,707.70-105,965.02

Finding the Fourth Proportional to 386,513.38, 579,707.70 and 105,965.02

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Solution

The fourth proportional to 386,513.38, 579,707.70 and 105,965.02 is: 158,930.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,513.38 : 579,707.70 = 105,965.02 : x
  2. Step 2: Convert to fraction form
    386,513.38/579,707.70 = 105,965.02/x
  3. Step 3: Cross multiply
    386,513.38x = 579,707.70 × 105,965.02
  4. Step 4: Simplify right side
    386,513.38x = 61,428,738,024.65
  5. Step 5: Solve for x
    x = 61,428,738,024.65/386,513.38
  6. Step 6: Final answer
    x = 158,930.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.