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Finding the Fourth Proportional to 213,645.70, 320,468.55 and 179,431.30

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Solution

The fourth proportional to 213,645.70, 320,468.55 and 179,431.30 is: 269,146.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,645.70 : 320,468.55 = 179,431.30 : x
  2. Step 2: Convert to fraction form
    213,645.70/320,468.55 = 179,431.30/x
  3. Step 3: Cross multiply
    213,645.70x = 320,468.55 × 179,431.30
  4. Step 4: Simplify right side
    213,645.70x = 57,502,088,535.62
  5. Step 5: Solve for x
    x = 57,502,088,535.62/213,645.70
  6. Step 6: Final answer
    x = 269,146.95

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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.