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Finding the Fourth Proportional to 291,283.06, 436,930.06 and 80,926.47

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Solution

The fourth proportional to 291,283.06, 436,930.06 and 80,926.47 is: 121,391.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,283.06 : 436,930.06 = 80,926.47 : x
  2. Step 2: Convert to fraction form
    291,283.06/436,930.06 = 80,926.47/x
  3. Step 3: Cross multiply
    291,283.06x = 436,930.06 × 80,926.47
  4. Step 4: Simplify right side
    291,283.06x = 35,359,207,392.69
  5. Step 5: Solve for x
    x = 35,359,207,392.69/291,283.06
  6. Step 6: Final answer
    x = 121,391.22

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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.