Home / 291,022.02-436,533.21-80,661.78

Finding the Fourth Proportional to 291,022.02, 436,533.21 and 80,661.78

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Solution

The fourth proportional to 291,022.02, 436,533.21 and 80,661.78 is: 120,992.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,022.02 : 436,533.21 = 80,661.78 : x
  2. Step 2: Convert to fraction form
    291,022.02/436,533.21 = 80,661.78/x
  3. Step 3: Cross multiply
    291,022.02x = 436,533.21 × 80,661.78
  4. Step 4: Simplify right side
    291,022.02x = 35,211,545,747.71
  5. Step 5: Solve for x
    x = 35,211,545,747.71/291,022.02
  6. Step 6: Final answer
    x = 120,992.72

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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.