Home / 427,214.36-640,885.24-157,321.73

Finding the Fourth Proportional to 427,214.36, 640,885.24 and 157,321.73

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Solution

The fourth proportional to 427,214.36, 640,885.24 and 157,321.73 is: 236,006.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,214.36 : 640,885.24 = 157,321.73 : x
  2. Step 2: Convert to fraction form
    427,214.36/640,885.24 = 157,321.73/x
  3. Step 3: Cross multiply
    427,214.36x = 640,885.24 × 157,321.73
  4. Step 4: Simplify right side
    427,214.36x = 100,825,170,697.23
  5. Step 5: Solve for x
    x = 100,825,170,697.23/427,214.36
  6. Step 6: Final answer
    x = 236,006.05

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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.