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Finding the Fourth Proportional to 290,362.93, 435,522.84 and 121,876.45

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Solution

The fourth proportional to 290,362.93, 435,522.84 and 121,876.45 is: 182,805.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,362.93 : 435,522.84 = 121,876.45 : x
  2. Step 2: Convert to fraction form
    290,362.93/435,522.84 = 121,876.45/x
  3. Step 3: Cross multiply
    290,362.93x = 435,522.84 × 121,876.45
  4. Step 4: Simplify right side
    290,362.93x = 53,079,976,772.83
  5. Step 5: Solve for x
    x = 53,079,976,772.83/290,362.93
  6. Step 6: Final answer
    x = 182,805.63

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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.