Home / 345,326.38-518,019.89-105,494.39

Finding the Fourth Proportional to 345,326.38, 518,019.89 and 105,494.39

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Solution

The fourth proportional to 345,326.38, 518,019.89 and 105,494.39 is: 158,250.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,326.38 : 518,019.89 = 105,494.39 : x
  2. Step 2: Convert to fraction form
    345,326.38/518,019.89 = 105,494.39/x
  3. Step 3: Cross multiply
    345,326.38x = 518,019.89 × 105,494.39
  4. Step 4: Simplify right side
    345,326.38x = 54,648,192,303.42
  5. Step 5: Solve for x
    x = 54,648,192,303.42/345,326.38
  6. Step 6: Final answer
    x = 158,250.85

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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.