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Finding the Fourth Proportional to 315,279.60, 472,919.40 and 197,181.60

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Solution

The fourth proportional to 315,279.60, 472,919.40 and 197,181.60 is: 295,772.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,279.60 : 472,919.40 = 197,181.60 : x
  2. Step 2: Convert to fraction form
    315,279.60/472,919.40 = 197,181.60/x
  3. Step 3: Cross multiply
    315,279.60x = 472,919.40 × 197,181.60
  4. Step 4: Simplify right side
    315,279.60x = 93,251,003,963.04
  5. Step 5: Solve for x
    x = 93,251,003,963.04/315,279.60
  6. Step 6: Final answer
    x = 295,772.40

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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.