Home / 664,390.12-996,742.86-215,111.02

Finding the Fourth Proportional to 664,390.12, 996,742.86 and 215,111.02

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Solution

The fourth proportional to 664,390.12, 996,742.86 and 215,111.02 is: 322,717.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,390.12 : 996,742.86 = 215,111.02 : x
  2. Step 2: Convert to fraction form
    664,390.12/996,742.86 = 215,111.02/x
  3. Step 3: Cross multiply
    664,390.12x = 996,742.86 × 215,111.02
  4. Step 4: Simplify right side
    664,390.12x = 214,410,373,292.32
  5. Step 5: Solve for x
    x = 214,410,373,292.32/664,390.12
  6. Step 6: Final answer
    x = 322,717.58

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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.