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Finding the Fourth Proportional to 171,211.80, 256,817.70 and 60,389.40

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Solution

The fourth proportional to 171,211.80, 256,817.70 and 60,389.40 is: 90,584.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,211.80 : 256,817.70 = 60,389.40 : x
  2. Step 2: Convert to fraction form
    171,211.80/256,817.70 = 60,389.40/x
  3. Step 3: Cross multiply
    171,211.80x = 256,817.70 × 60,389.40
  4. Step 4: Simplify right side
    171,211.80x = 15,509,066,812.38
  5. Step 5: Solve for x
    x = 15,509,066,812.38/171,211.80
  6. Step 6: Final answer
    x = 90,584.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.