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Finding the Fourth Proportional to 290,429.05, 435,523.66 and 126,122.13

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Solution

The fourth proportional to 290,429.05, 435,523.66 and 126,122.13 is: 189,131.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,429.05 : 435,523.66 = 126,122.13 : x
  2. Step 2: Convert to fraction form
    290,429.05/435,523.66 = 126,122.13/x
  3. Step 3: Cross multiply
    290,429.05x = 435,523.66 × 126,122.13
  4. Step 4: Simplify right side
    290,429.05x = 54,929,171,664.60
  5. Step 5: Solve for x
    x = 54,929,171,664.60/290,429.05
  6. Step 6: Final answer
    x = 189,131.12

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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.