Home / 291,132.14-436,698.39-80,770.28

Finding the Fourth Proportional to 291,132.14, 436,698.39 and 80,770.28

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Solution

The fourth proportional to 291,132.14, 436,698.39 and 80,770.28 is: 121,155.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,132.14 : 436,698.39 = 80,770.28 : x
  2. Step 2: Convert to fraction form
    291,132.14/436,698.39 = 80,770.28/x
  3. Step 3: Cross multiply
    291,132.14x = 436,698.39 × 80,770.28
  4. Step 4: Simplify right side
    291,132.14x = 35,272,251,235.85
  5. Step 5: Solve for x
    x = 35,272,251,235.85/291,132.14
  6. Step 6: Final answer
    x = 121,155.47

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1.5x scale

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.