Home / 427,234.36-640,887.96-111,690.76

Finding the Fourth Proportional to 427,234.36, 640,887.96 and 111,690.76

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Solution

The fourth proportional to 427,234.36, 640,887.96 and 111,690.76 is: 167,545.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,234.36 : 640,887.96 = 111,690.76 : x
  2. Step 2: Convert to fraction form
    427,234.36/640,887.96 = 111,690.76/x
  3. Step 3: Cross multiply
    427,234.36x = 640,887.96 × 111,690.76
  4. Step 4: Simplify right side
    427,234.36x = 71,581,263,327.25
  5. Step 5: Solve for x
    x = 71,581,263,327.25/427,234.36
  6. Step 6: Final answer
    x = 167,545.66

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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.