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Finding the Fourth Proportional to 397,078.20, 595,722.90 and 172,342.20

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Solution

The fourth proportional to 397,078.20, 595,722.90 and 172,342.20 is: 258,559.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,078.20 : 595,722.90 = 172,342.20 : x
  2. Step 2: Convert to fraction form
    397,078.20/595,722.90 = 172,342.20/x
  3. Step 3: Cross multiply
    397,078.20x = 595,722.90 × 172,342.20
  4. Step 4: Simplify right side
    397,078.20x = 102,668,195,176.38
  5. Step 5: Solve for x
    x = 102,668,195,176.38/397,078.20
  6. Step 6: Final answer
    x = 258,559.13

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1.5x scale

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.