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Finding the Fourth Proportional to 312,301.20, 430,975.17 and 169,061.22

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Solution

The fourth proportional to 312,301.20, 430,975.17 and 169,061.22 is: 233,304.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,301.20 : 430,975.17 = 169,061.22 : x
  2. Step 2: Convert to fraction form
    312,301.20/430,975.17 = 169,061.22/x
  3. Step 3: Cross multiply
    312,301.20x = 430,975.17 × 169,061.22
  4. Step 4: Simplify right side
    312,301.20x = 72,861,188,029.91
  5. Step 5: Solve for x
    x = 72,861,188,029.91/312,301.20
  6. Step 6: Final answer
    x = 233,304.22

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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.