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Finding the Fourth Proportional to 215,292.54, 322,643.54 and 136,265.70

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Solution

The fourth proportional to 215,292.54, 322,643.54 and 136,265.70 is: 204,211.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,292.54 : 322,643.54 = 136,265.70 : x
  2. Step 2: Convert to fraction form
    215,292.54/322,643.54 = 136,265.70/x
  3. Step 3: Cross multiply
    215,292.54x = 322,643.54 × 136,265.70
  4. Step 4: Simplify right side
    215,292.54x = 43,965,247,828.58
  5. Step 5: Solve for x
    x = 43,965,247,828.58/215,292.54
  6. Step 6: Final answer
    x = 204,211.66

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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.