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Finding the Fourth Proportional to 290,133.62, 435,324.27 and 163,868.66

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Solution

The fourth proportional to 290,133.62, 435,324.27 and 163,868.66 is: 245,872.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,133.62 : 435,324.27 = 163,868.66 : x
  2. Step 2: Convert to fraction form
    290,133.62/435,324.27 = 163,868.66/x
  3. Step 3: Cross multiply
    290,133.62x = 435,324.27 × 163,868.66
  4. Step 4: Simplify right side
    290,133.62x = 71,336,004,790.38
  5. Step 5: Solve for x
    x = 71,336,004,790.38/290,133.62
  6. Step 6: Final answer
    x = 245,872.94

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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.