Home / 257,922.90-387,025.56-100,157.58

Finding the Fourth Proportional to 257,922.90, 387,025.56 and 100,157.58

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Solution

The fourth proportional to 257,922.90, 387,025.56 and 100,157.58 is: 150,291.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,922.90 : 387,025.56 = 100,157.58 : x
  2. Step 2: Convert to fraction form
    257,922.90/387,025.56 = 100,157.58/x
  3. Step 3: Cross multiply
    257,922.90x = 387,025.56 × 100,157.58
  4. Step 4: Simplify right side
    257,922.90x = 38,763,543,487.74
  5. Step 5: Solve for x
    x = 38,763,543,487.74/257,922.90
  6. Step 6: Final answer
    x = 150,291.21

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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.