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Finding the Fourth Proportional to 291,991.52, 437,987.28 and 70,375.52

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Solution

The fourth proportional to 291,991.52, 437,987.28 and 70,375.52 is: 105,563.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,991.52 : 437,987.28 = 70,375.52 : x
  2. Step 2: Convert to fraction form
    291,991.52/437,987.28 = 70,375.52/x
  3. Step 3: Cross multiply
    291,991.52x = 437,987.28 × 70,375.52
  4. Step 4: Simplify right side
    291,991.52x = 30,823,582,583.39
  5. Step 5: Solve for x
    x = 30,823,582,583.39/291,991.52
  6. Step 6: Final answer
    x = 105,563.28

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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.