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Finding the Fourth Proportional to 312,260.67, 430,920.80 and 169,020.67

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Solution

The fourth proportional to 312,260.67, 430,920.80 and 169,020.67 is: 233,249.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,260.67 : 430,920.80 = 169,020.67 : x
  2. Step 2: Convert to fraction form
    312,260.67/430,920.80 = 169,020.67/x
  3. Step 3: Cross multiply
    312,260.67x = 430,920.80 × 169,020.67
  4. Step 4: Simplify right side
    312,260.67x = 72,834,521,487.83
  5. Step 5: Solve for x
    x = 72,834,521,487.83/312,260.67
  6. Step 6: Final answer
    x = 233,249.11

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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.