Home / 672,139.20-1,008,208.80-198,829.20

Finding the Fourth Proportional to 672,139.20, 1,008,208.80 and 198,829.20

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Solution

The fourth proportional to 672,139.20, 1,008,208.80 and 198,829.20 is: 298,243.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,139.20 : 1,008,208.80 = 198,829.20 : x
  2. Step 2: Convert to fraction form
    672,139.20/1,008,208.80 = 198,829.20/x
  3. Step 3: Cross multiply
    672,139.20x = 1,008,208.80 × 198,829.20
  4. Step 4: Simplify right side
    672,139.20x = 200,461,349,136.96
  5. Step 5: Solve for x
    x = 200,461,349,136.96/672,139.20
  6. Step 6: Final answer
    x = 298,243.80

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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.