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Finding the Fourth Proportional to 290,163.40, 434,726.70 and 237,286.60

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Solution

The fourth proportional to 290,163.40, 434,726.70 and 237,286.60 is: 355,505.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,163.40 : 434,726.70 = 237,286.60 : x
  2. Step 2: Convert to fraction form
    290,163.40/434,726.70 = 237,286.60/x
  3. Step 3: Cross multiply
    290,163.40x = 434,726.70 × 237,286.60
  4. Step 4: Simplify right side
    290,163.40x = 103,154,820,572.22
  5. Step 5: Solve for x
    x = 103,154,820,572.22/290,163.40
  6. Step 6: Final answer
    x = 355,505.97

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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.