Home / 291,190.47-436,788.15-80,844.81

Finding the Fourth Proportional to 291,190.47, 436,788.15 and 80,844.81

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Solution

The fourth proportional to 291,190.47, 436,788.15 and 80,844.81 is: 121,267.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,190.47 : 436,788.15 = 80,844.81 : x
  2. Step 2: Convert to fraction form
    291,190.47/436,788.15 = 80,844.81/x
  3. Step 3: Cross multiply
    291,190.47x = 436,788.15 × 80,844.81
  4. Step 4: Simplify right side
    291,190.47x = 35,312,054,997.00
  5. Step 5: Solve for x
    x = 35,312,054,997.00/291,190.47
  6. Step 6: Final answer
    x = 121,267.89

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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.