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Finding the Fourth Proportional to 345,211.76, 517,839.96 and 108,563.60

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Solution

The fourth proportional to 345,211.76, 517,839.96 and 108,563.60 is: 162,852.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,211.76 : 517,839.96 = 108,563.60 : x
  2. Step 2: Convert to fraction form
    345,211.76/517,839.96 = 108,563.60/x
  3. Step 3: Cross multiply
    345,211.76x = 517,839.96 × 108,563.60
  4. Step 4: Simplify right side
    345,211.76x = 56,218,570,281.46
  5. Step 5: Solve for x
    x = 56,218,570,281.46/345,211.76
  6. Step 6: Final answer
    x = 162,852.42

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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.