Home / 290,868.78-435,856.05-172,304.22

Finding the Fourth Proportional to 290,868.78, 435,856.05 and 172,304.22

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Solution

The fourth proportional to 290,868.78, 435,856.05 and 172,304.22 is: 258,191.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,868.78 : 435,856.05 = 172,304.22 : x
  2. Step 2: Convert to fraction form
    290,868.78/435,856.05 = 172,304.22/x
  3. Step 3: Cross multiply
    290,868.78x = 435,856.05 × 172,304.22
  4. Step 4: Simplify right side
    290,868.78x = 75,099,836,727.53
  5. Step 5: Solve for x
    x = 75,099,836,727.53/290,868.78
  6. Step 6: Final answer
    x = 258,191.47

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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.