Home / 427,254.80-640,826.52-111,736.04

Finding the Fourth Proportional to 427,254.80, 640,826.52 and 111,736.04

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Solution

The fourth proportional to 427,254.80, 640,826.52 and 111,736.04 is: 167,589.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,254.80 : 640,826.52 = 111,736.04 : x
  2. Step 2: Convert to fraction form
    427,254.80/640,826.52 = 111,736.04/x
  3. Step 3: Cross multiply
    427,254.80x = 640,826.52 × 111,736.04
  4. Step 4: Simplify right side
    427,254.80x = 71,603,417,671.78
  5. Step 5: Solve for x
    x = 71,603,417,671.78/427,254.80
  6. Step 6: Final answer
    x = 167,589.50

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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.