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Finding the Fourth Proportional to 257,847.30, 386,880.30 and 163,150.20

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Solution

The fourth proportional to 257,847.30, 386,880.30 and 163,150.20 is: 244,794.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,847.30 : 386,880.30 = 163,150.20 : x
  2. Step 2: Convert to fraction form
    257,847.30/386,880.30 = 163,150.20/x
  3. Step 3: Cross multiply
    257,847.30x = 386,880.30 × 163,150.20
  4. Step 4: Simplify right side
    257,847.30x = 63,119,598,321.06
  5. Step 5: Solve for x
    x = 63,119,598,321.06/257,847.30
  6. Step 6: Final answer
    x = 244,794.49

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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.