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Finding the Fourth Proportional to 315,939.60, 474,049.80 and 166,143.60

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Solution

The fourth proportional to 315,939.60, 474,049.80 and 166,143.60 is: 249,289.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,939.60 : 474,049.80 = 166,143.60 : x
  2. Step 2: Convert to fraction form
    315,939.60/474,049.80 = 166,143.60/x
  3. Step 3: Cross multiply
    315,939.60x = 474,049.80 × 166,143.60
  4. Step 4: Simplify right side
    315,939.60x = 78,760,340,351.28
  5. Step 5: Solve for x
    x = 78,760,340,351.28/315,939.60
  6. Step 6: Final answer
    x = 249,289.23

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1.5x scale

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.