Home / 426,936.15-640,309.86-123,264.34

Finding the Fourth Proportional to 426,936.15, 640,309.86 and 123,264.34

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Solution

The fourth proportional to 426,936.15, 640,309.86 and 123,264.34 is: 184,869.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,936.15 : 640,309.86 = 123,264.34 : x
  2. Step 2: Convert to fraction form
    426,936.15/640,309.86 = 123,264.34/x
  3. Step 3: Cross multiply
    426,936.15x = 640,309.86 × 123,264.34
  4. Step 4: Simplify right side
    426,936.15x = 78,927,370,687.62
  5. Step 5: Solve for x
    x = 78,927,370,687.62/426,936.15
  6. Step 6: Final answer
    x = 184,869.26

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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.