Home / 256,122.15-353,283.62-155,520.15

Finding the Fourth Proportional to 256,122.15, 353,283.62 and 155,520.15

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Solution

The fourth proportional to 256,122.15, 353,283.62 and 155,520.15 is: 214,517.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,122.15 : 353,283.62 = 155,520.15 : x
  2. Step 2: Convert to fraction form
    256,122.15/353,283.62 = 155,520.15/x
  3. Step 3: Cross multiply
    256,122.15x = 353,283.62 × 155,520.15
  4. Step 4: Simplify right side
    256,122.15x = 54,942,720,797.34
  5. Step 5: Solve for x
    x = 54,942,720,797.34/256,122.15
  6. Step 6: Final answer
    x = 214,517.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.