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Finding the Fourth Proportional to 313,542.46, 432,691.86 and 170,305.30

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Solution

The fourth proportional to 313,542.46, 432,691.86 and 170,305.30 is: 235,023.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,542.46 : 432,691.86 = 170,305.30 : x
  2. Step 2: Convert to fraction form
    313,542.46/432,691.86 = 170,305.30/x
  3. Step 3: Cross multiply
    313,542.46x = 432,691.86 × 170,305.30
  4. Step 4: Simplify right side
    313,542.46x = 73,689,717,024.86
  5. Step 5: Solve for x
    x = 73,689,717,024.86/313,542.46
  6. Step 6: Final answer
    x = 235,023.09

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1.5x scale

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.