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Finding the Fourth Proportional to 291,427.08, 437,213.52 and 91,739.40

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Solution

The fourth proportional to 291,427.08, 437,213.52 and 91,739.40 is: 137,632.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,427.08 : 437,213.52 = 91,739.40 : x
  2. Step 2: Convert to fraction form
    291,427.08/437,213.52 = 91,739.40/x
  3. Step 3: Cross multiply
    291,427.08x = 437,213.52 × 91,739.40
  4. Step 4: Simplify right side
    291,427.08x = 40,109,705,996.69
  5. Step 5: Solve for x
    x = 40,109,705,996.69/291,427.08
  6. Step 6: Final answer
    x = 137,632.05

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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.