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Finding the Fourth Proportional to 199,329.60, 298,929.60 and 66,187.20

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Solution

The fourth proportional to 199,329.60, 298,929.60 and 66,187.20 is: 99,259.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,329.60 : 298,929.60 = 66,187.20 : x
  2. Step 2: Convert to fraction form
    199,329.60/298,929.60 = 66,187.20/x
  3. Step 3: Cross multiply
    199,329.60x = 298,929.60 × 66,187.20
  4. Step 4: Simplify right side
    199,329.60x = 19,785,313,221.12
  5. Step 5: Solve for x
    x = 19,785,313,221.12/199,329.60
  6. Step 6: Final answer
    x = 99,259.28

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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.