Home / 257,946.78-387,133.38-131,680.32

Finding the Fourth Proportional to 257,946.78, 387,133.38 and 131,680.32

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Solution

The fourth proportional to 257,946.78, 387,133.38 and 131,680.32 is: 197,629.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,946.78 : 387,133.38 = 131,680.32 : x
  2. Step 2: Convert to fraction form
    257,946.78/387,133.38 = 131,680.32/x
  3. Step 3: Cross multiply
    257,946.78x = 387,133.38 × 131,680.32
  4. Step 4: Simplify right side
    257,946.78x = 50,977,847,361.08
  5. Step 5: Solve for x
    x = 50,977,847,361.08/257,946.78
  6. Step 6: Final answer
    x = 197,629.32

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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.