Home / 305,084.72-457,629.74-80,477.04

Finding the Fourth Proportional to 305,084.72, 457,629.74 and 80,477.04

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Solution

The fourth proportional to 305,084.72, 457,629.74 and 80,477.04 is: 120,716.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,084.72 : 457,629.74 = 80,477.04 : x
  2. Step 2: Convert to fraction form
    305,084.72/457,629.74 = 80,477.04/x
  3. Step 3: Cross multiply
    305,084.72x = 457,629.74 × 80,477.04
  4. Step 4: Simplify right side
    305,084.72x = 36,828,686,488.78
  5. Step 5: Solve for x
    x = 36,828,686,488.78/305,084.72
  6. Step 6: Final answer
    x = 120,716.26

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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.