Home / 290,538.38-435,832.65-80,176.29

Finding the Fourth Proportional to 290,538.38, 435,832.65 and 80,176.29

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Solution

The fourth proportional to 290,538.38, 435,832.65 and 80,176.29 is: 120,271.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,538.38 : 435,832.65 = 80,176.29 : x
  2. Step 2: Convert to fraction form
    290,538.38/435,832.65 = 80,176.29/x
  3. Step 3: Cross multiply
    290,538.38x = 435,832.65 × 80,176.29
  4. Step 4: Simplify right side
    290,538.38x = 34,943,444,937.87
  5. Step 5: Solve for x
    x = 34,943,444,937.87/290,538.38
  6. Step 6: Final answer
    x = 120,271.36

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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.