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Finding the Fourth Proportional to 291,508.94, 402,383.01 and 170,689.07

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Solution

The fourth proportional to 291,508.94, 402,383.01 and 170,689.07 is: 235,609.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,508.94 : 402,383.01 = 170,689.07 : x
  2. Step 2: Convert to fraction form
    291,508.94/402,383.01 = 170,689.07/x
  3. Step 3: Cross multiply
    291,508.94x = 402,383.01 × 170,689.07
  4. Step 4: Simplify right side
    291,508.94x = 68,682,381,760.70
  5. Step 5: Solve for x
    x = 68,682,381,760.70/291,508.94
  6. Step 6: Final answer
    x = 235,609.86

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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.