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Finding the Fourth Proportional to 290,362.73, 435,522.57 and 121,876.25

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Solution

The fourth proportional to 290,362.73, 435,522.57 and 121,876.25 is: 182,805.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,362.73 : 435,522.57 = 121,876.25 : x
  2. Step 2: Convert to fraction form
    290,362.73/435,522.57 = 121,876.25/x
  3. Step 3: Cross multiply
    290,362.73x = 435,522.57 × 121,876.25
  4. Step 4: Simplify right side
    290,362.73x = 53,079,855,444.35
  5. Step 5: Solve for x
    x = 53,079,855,444.35/290,362.73
  6. Step 6: Final answer
    x = 182,805.34

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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.