Home / 420,944.66-631,324.69-121,360.14

Finding the Fourth Proportional to 420,944.66, 631,324.69 and 121,360.14

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Solution

The fourth proportional to 420,944.66, 631,324.69 and 121,360.14 is: 182,013.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,944.66 : 631,324.69 = 121,360.14 : x
  2. Step 2: Convert to fraction form
    420,944.66/631,324.69 = 121,360.14/x
  3. Step 3: Cross multiply
    420,944.66x = 631,324.69 × 121,360.14
  4. Step 4: Simplify right side
    420,944.66x = 76,617,652,763.86
  5. Step 5: Solve for x
    x = 76,617,652,763.86/420,944.66
  6. Step 6: Final answer
    x = 182,013.60

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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.