Home / 198,320.48-297,481.08-139,419.68

Finding the Fourth Proportional to 198,320.48, 297,481.08 and 139,419.68

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Solution

The fourth proportional to 198,320.48, 297,481.08 and 139,419.68 is: 209,129.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,320.48 : 297,481.08 = 139,419.68 : x
  2. Step 2: Convert to fraction form
    198,320.48/297,481.08 = 139,419.68/x
  3. Step 3: Cross multiply
    198,320.48x = 297,481.08 × 139,419.68
  4. Step 4: Simplify right side
    198,320.48x = 41,474,716,979.65
  5. Step 5: Solve for x
    x = 41,474,716,979.65/198,320.48
  6. Step 6: Final answer
    x = 209,129.77

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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.