Home / 418,825.05-628,229.47-119,307.57

Finding the Fourth Proportional to 418,825.05, 628,229.47 and 119,307.57

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Solution

The fourth proportional to 418,825.05, 628,229.47 and 119,307.57 is: 178,959.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,825.05 : 628,229.47 = 119,307.57 : x
  2. Step 2: Convert to fraction form
    418,825.05/628,229.47 = 119,307.57/x
  3. Step 3: Cross multiply
    418,825.05x = 628,229.47 × 119,307.57
  4. Step 4: Simplify right side
    418,825.05x = 74,952,531,468.09
  5. Step 5: Solve for x
    x = 74,952,531,468.09/418,825.05
  6. Step 6: Final answer
    x = 178,959.05

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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.