Home / 345,836.80-518,800.56-135,447.40

Finding the Fourth Proportional to 345,836.80, 518,800.56 and 135,447.40

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Solution

The fourth proportional to 345,836.80, 518,800.56 and 135,447.40 is: 203,188.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,836.80 : 518,800.56 = 135,447.40 : x
  2. Step 2: Convert to fraction form
    345,836.80/518,800.56 = 135,447.40/x
  3. Step 3: Cross multiply
    345,836.80x = 518,800.56 × 135,447.40
  4. Step 4: Simplify right side
    345,836.80x = 70,270,186,970.54
  5. Step 5: Solve for x
    x = 70,270,186,970.54/345,836.80
  6. Step 6: Final answer
    x = 203,188.87

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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.