Home / 345,886.20-518,654.34-105,928.56

Finding the Fourth Proportional to 345,886.20, 518,654.34 and 105,928.56

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Solution

The fourth proportional to 345,886.20, 518,654.34 and 105,928.56 is: 158,839.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,886.20 : 518,654.34 = 105,928.56 : x
  2. Step 2: Convert to fraction form
    345,886.20/518,654.34 = 105,928.56/x
  3. Step 3: Cross multiply
    345,886.20x = 518,654.34 × 105,928.56
  4. Step 4: Simplify right side
    345,886.20x = 54,940,307,373.95
  5. Step 5: Solve for x
    x = 54,940,307,373.95/345,886.20
  6. Step 6: Final answer
    x = 158,839.26

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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.