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Finding the Fourth Proportional to 306,661.60, 423,174 and 179,329.60

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Solution

The fourth proportional to 306,661.60, 423,174 and 179,329.60 is: 247,463.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,661.60 : 423,174 = 179,329.60 : x
  2. Step 2: Convert to fraction form
    306,661.60/423,174 = 179,329.60/x
  3. Step 3: Cross multiply
    306,661.60x = 423,174 × 179,329.60
  4. Step 4: Simplify right side
    306,661.60x = 75,887,624,150.40
  5. Step 5: Solve for x
    x = 75,887,624,150.40/306,661.60
  6. Step 6: Final answer
    x = 247,463.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.