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Finding the Fourth Proportional to 245,863.20, 368,794.80 and 171,213.60

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Solution

The fourth proportional to 245,863.20, 368,794.80 and 171,213.60 is: 256,820.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,863.20 : 368,794.80 = 171,213.60 : x
  2. Step 2: Convert to fraction form
    245,863.20/368,794.80 = 171,213.60/x
  3. Step 3: Cross multiply
    245,863.20x = 368,794.80 × 171,213.60
  4. Step 4: Simplify right side
    245,863.20x = 63,142,685,369.28
  5. Step 5: Solve for x
    x = 63,142,685,369.28/245,863.20
  6. Step 6: Final answer
    x = 256,820.40

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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.