Home / 427,260.06-640,892.25-111,717.66

Finding the Fourth Proportional to 427,260.06, 640,892.25 and 111,717.66

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Solution

The fourth proportional to 427,260.06, 640,892.25 and 111,717.66 is: 167,577.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,260.06 : 640,892.25 = 111,717.66 : x
  2. Step 2: Convert to fraction form
    427,260.06/640,892.25 = 111,717.66/x
  3. Step 3: Cross multiply
    427,260.06x = 640,892.25 × 111,717.66
  4. Step 4: Simplify right side
    427,260.06x = 71,598,982,482.14
  5. Step 5: Solve for x
    x = 71,598,982,482.14/427,260.06
  6. Step 6: Final answer
    x = 167,577.05

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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.