Home / 215,224.32-322,838.10-74,982.72

Finding the Fourth Proportional to 215,224.32, 322,838.10 and 74,982.72

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Solution

The fourth proportional to 215,224.32, 322,838.10 and 74,982.72 is: 112,474.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,224.32 : 322,838.10 = 74,982.72 : x
  2. Step 2: Convert to fraction form
    215,224.32/322,838.10 = 74,982.72/x
  3. Step 3: Cross multiply
    215,224.32x = 322,838.10 × 74,982.72
  4. Step 4: Simplify right side
    215,224.32x = 24,207,278,857.63
  5. Step 5: Solve for x
    x = 24,207,278,857.63/215,224.32
  6. Step 6: Final answer
    x = 112,474.64

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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.