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Finding the Fourth Proportional to 290,469.62, 435,766.40 and 100,935.70

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Solution

The fourth proportional to 290,469.62, 435,766.40 and 100,935.70 is: 151,425.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,469.62 : 435,766.40 = 100,935.70 : x
  2. Step 2: Convert to fraction form
    290,469.62/435,766.40 = 100,935.70/x
  3. Step 3: Cross multiply
    290,469.62x = 435,766.40 × 100,935.70
  4. Step 4: Simplify right side
    290,469.62x = 43,984,386,620.48
  5. Step 5: Solve for x
    x = 43,984,386,620.48/290,469.62
  6. Step 6: Final answer
    x = 151,425.08

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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.