Home / 420,829.90-631,456.02-196,207.92

Finding the Fourth Proportional to 420,829.90, 631,456.02 and 196,207.92

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Solution

The fourth proportional to 420,829.90, 631,456.02 and 196,207.92 is: 294,410.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,829.90 : 631,456.02 = 196,207.92 : x
  2. Step 2: Convert to fraction form
    420,829.90/631,456.02 = 196,207.92/x
  3. Step 3: Cross multiply
    420,829.90x = 631,456.02 × 196,207.92
  4. Step 4: Simplify right side
    420,829.90x = 123,896,672,255.68
  5. Step 5: Solve for x
    x = 123,896,672,255.68/420,829.90
  6. Step 6: Final answer
    x = 294,410.34

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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.