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Finding the Fourth Proportional to 291,281.31, 436,927.44 and 80,924.72

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Solution

The fourth proportional to 291,281.31, 436,927.44 and 80,924.72 is: 121,388.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,281.31 : 436,927.44 = 80,924.72 : x
  2. Step 2: Convert to fraction form
    291,281.31/436,927.44 = 80,924.72/x
  3. Step 3: Cross multiply
    291,281.31x = 436,927.44 × 80,924.72
  4. Step 4: Simplify right side
    291,281.31x = 35,358,229,447.69
  5. Step 5: Solve for x
    x = 35,358,229,447.69/291,281.31
  6. Step 6: Final answer
    x = 121,388.60

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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.