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Finding the Fourth Proportional to 312,888.26, 431,788.66 and 169,648.67

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Solution

The fourth proportional to 312,888.26, 431,788.66 and 169,648.67 is: 234,116.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,888.26 : 431,788.66 = 169,648.67 : x
  2. Step 2: Convert to fraction form
    312,888.26/431,788.66 = 169,648.67/x
  3. Step 3: Cross multiply
    312,888.26x = 431,788.66 × 169,648.67
  4. Step 4: Simplify right side
    312,888.26x = 73,252,372,545.43
  5. Step 5: Solve for x
    x = 73,252,372,545.43/312,888.26
  6. Step 6: Final answer
    x = 234,116.72

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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.