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Finding the Fourth Proportional to 291,270.58, 436,929.51 and 80,908.49

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Solution

The fourth proportional to 291,270.58, 436,929.51 and 80,908.49 is: 121,369.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,270.58 : 436,929.51 = 80,908.49 : x
  2. Step 2: Convert to fraction form
    291,270.58/436,929.51 = 80,908.49/x
  3. Step 3: Cross multiply
    291,270.58x = 436,929.51 × 80,908.49
  4. Step 4: Simplify right side
    291,270.58x = 35,351,306,890.54
  5. Step 5: Solve for x
    x = 35,351,306,890.54/291,270.58
  6. Step 6: Final answer
    x = 121,369.30

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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.