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Finding the Fourth Proportional to 303,391.50, 418,680.45 and 169,255.50

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Solution

The fourth proportional to 303,391.50, 418,680.45 and 169,255.50 is: 233,572.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,391.50 : 418,680.45 = 169,255.50 : x
  2. Step 2: Convert to fraction form
    303,391.50/418,680.45 = 169,255.50/x
  3. Step 3: Cross multiply
    303,391.50x = 418,680.45 × 169,255.50
  4. Step 4: Simplify right side
    303,391.50x = 70,863,968,904.98
  5. Step 5: Solve for x
    x = 70,863,968,904.98/303,391.50
  6. Step 6: Final answer
    x = 233,572.69

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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.