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Finding the Fourth Proportional to 215,465.06, 323,197.59 and 67,721.06

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Solution

The fourth proportional to 215,465.06, 323,197.59 and 67,721.06 is: 101,581.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,465.06 : 323,197.59 = 67,721.06 : x
  2. Step 2: Convert to fraction form
    215,465.06/323,197.59 = 67,721.06/x
  3. Step 3: Cross multiply
    215,465.06x = 323,197.59 × 67,721.06
  4. Step 4: Simplify right side
    215,465.06x = 21,887,284,446.19
  5. Step 5: Solve for x
    x = 21,887,284,446.19/215,465.06
  6. Step 6: Final answer
    x = 101,581.59

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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.