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Finding the Fourth Proportional to 290,799.62, 436,199.58 and 91,135.56

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Solution

The fourth proportional to 290,799.62, 436,199.58 and 91,135.56 is: 136,703.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,799.62 : 436,199.58 = 91,135.56 : x
  2. Step 2: Convert to fraction form
    290,799.62/436,199.58 = 91,135.56/x
  3. Step 3: Cross multiply
    290,799.62x = 436,199.58 × 91,135.56
  4. Step 4: Simplify right side
    290,799.62x = 39,753,290,950.38
  5. Step 5: Solve for x
    x = 39,753,290,950.38/290,799.62
  6. Step 6: Final answer
    x = 136,703.38

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1.5x scale

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.