Home / 345,899.05-518,949.04-143,458.03

Finding the Fourth Proportional to 345,899.05, 518,949.04 and 143,458.03

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Solution

The fourth proportional to 345,899.05, 518,949.04 and 143,458.03 is: 215,228.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,899.05 : 518,949.04 = 143,458.03 : x
  2. Step 2: Convert to fraction form
    345,899.05/518,949.04 = 143,458.03/x
  3. Step 3: Cross multiply
    345,899.05x = 518,949.04 × 143,458.03
  4. Step 4: Simplify right side
    345,899.05x = 74,447,406,948.79
  5. Step 5: Solve for x
    x = 74,447,406,948.79/345,899.05
  6. Step 6: Final answer
    x = 215,228.71

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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.