Home / 291,853.20-437,725.80-81,447.60

Finding the Fourth Proportional to 291,853.20, 437,725.80 and 81,447.60

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Solution

The fourth proportional to 291,853.20, 437,725.80 and 81,447.60 is: 122,156.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,853.20 : 437,725.80 = 81,447.60 : x
  2. Step 2: Convert to fraction form
    291,853.20/437,725.80 = 81,447.60/x
  3. Step 3: Cross multiply
    291,853.20x = 437,725.80 × 81,447.60
  4. Step 4: Simplify right side
    291,853.20x = 35,651,715,868.08
  5. Step 5: Solve for x
    x = 35,651,715,868.08/291,853.20
  6. Step 6: Final answer
    x = 122,156.33

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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.