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Finding the Fourth Proportional to 291,346.26, 437,019.52 and 80,986.02

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Solution

The fourth proportional to 291,346.26, 437,019.52 and 80,986.02 is: 121,479.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,346.26 : 437,019.52 = 80,986.02 : x
  2. Step 2: Convert to fraction form
    291,346.26/437,019.52 = 80,986.02/x
  3. Step 3: Cross multiply
    291,346.26x = 437,019.52 × 80,986.02
  4. Step 4: Simplify right side
    291,346.26x = 35,392,471,587.11
  5. Step 5: Solve for x
    x = 35,392,471,587.11/291,346.26
  6. Step 6: Final answer
    x = 121,479.07

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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.