Home / 215,109.47-297,154.62-172,372.85

Finding the Fourth Proportional to 215,109.47, 297,154.62 and 172,372.85

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Solution

The fourth proportional to 215,109.47, 297,154.62 and 172,372.85 is: 238,117.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,109.47 : 297,154.62 = 172,372.85 : x
  2. Step 2: Convert to fraction form
    215,109.47/297,154.62 = 172,372.85/x
  3. Step 3: Cross multiply
    215,109.47x = 297,154.62 × 172,372.85
  4. Step 4: Simplify right side
    215,109.47x = 51,221,389,519.14
  5. Step 5: Solve for x
    x = 51,221,389,519.14/215,109.47
  6. Step 6: Final answer
    x = 238,117.78

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1.5x scale

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.