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Finding the Fourth Proportional to 291,054.75, 436,582.13 and 80,692.70

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Solution

The fourth proportional to 291,054.75, 436,582.13 and 80,692.70 is: 121,039.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,054.75 : 436,582.13 = 80,692.70 : x
  2. Step 2: Convert to fraction form
    291,054.75/436,582.13 = 80,692.70/x
  3. Step 3: Cross multiply
    291,054.75x = 436,582.13 × 80,692.70
  4. Step 4: Simplify right side
    291,054.75x = 35,228,988,255.08
  5. Step 5: Solve for x
    x = 35,228,988,255.08/291,054.75
  6. Step 6: Final answer
    x = 121,039.04

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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.