Home / 291,787.10-402,998.35-196,127.72

Finding the Fourth Proportional to 291,787.10, 402,998.35 and 196,127.72

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Solution

The fourth proportional to 291,787.10, 402,998.35 and 196,127.72 is: 270,879.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,787.10 : 402,998.35 = 196,127.72 : x
  2. Step 2: Convert to fraction form
    291,787.10/402,998.35 = 196,127.72/x
  3. Step 3: Cross multiply
    291,787.10x = 402,998.35 × 196,127.72
  4. Step 4: Simplify right side
    291,787.10x = 79,039,146,568.62
  5. Step 5: Solve for x
    x = 79,039,146,568.62/291,787.10
  6. Step 6: Final answer
    x = 270,879.51

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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.