Home / 291,724.20-437,532.30-81,318.60

Finding the Fourth Proportional to 291,724.20, 437,532.30 and 81,318.60

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Solution

The fourth proportional to 291,724.20, 437,532.30 and 81,318.60 is: 121,962.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,724.20 : 437,532.30 = 81,318.60 : x
  2. Step 2: Convert to fraction form
    291,724.20/437,532.30 = 81,318.60/x
  3. Step 3: Cross multiply
    291,724.20x = 437,532.30 × 81,318.60
  4. Step 4: Simplify right side
    291,724.20x = 35,579,514,090.78
  5. Step 5: Solve for x
    x = 35,579,514,090.78/291,724.20
  6. Step 6: Final answer
    x = 121,962.85

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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.