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Finding the Fourth Proportional to 313,758.70, 432,990.34 and 170,518.73

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Solution

The fourth proportional to 313,758.70, 432,990.34 and 170,518.73 is: 235,317.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,758.70 : 432,990.34 = 170,518.73 : x
  2. Step 2: Convert to fraction form
    313,758.70/432,990.34 = 170,518.73/x
  3. Step 3: Cross multiply
    313,758.70x = 432,990.34 × 170,518.73
  4. Step 4: Simplify right side
    313,758.70x = 73,832,960,287.82
  5. Step 5: Solve for x
    x = 73,832,960,287.82/313,758.70
  6. Step 6: Final answer
    x = 235,317.65

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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.