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Finding the Fourth Proportional to 290,815.62, 436,222.74 and 91,151.22

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Solution

The fourth proportional to 290,815.62, 436,222.74 and 91,151.22 is: 136,726.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,815.62 : 436,222.74 = 91,151.22 : x
  2. Step 2: Convert to fraction form
    290,815.62/436,222.74 = 91,151.22/x
  3. Step 3: Cross multiply
    290,815.62x = 436,222.74 × 91,151.22
  4. Step 4: Simplify right side
    290,815.62x = 39,762,234,942.74
  5. Step 5: Solve for x
    x = 39,762,234,942.74/290,815.62
  6. Step 6: Final answer
    x = 136,726.61

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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.