Home / 256,982.20-385,497.60-69,993.70

Finding the Fourth Proportional to 256,982.20, 385,497.60 and 69,993.70

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Solution

The fourth proportional to 256,982.20, 385,497.60 and 69,993.70 is: 104,997.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,982.20 : 385,497.60 = 69,993.70 : x
  2. Step 2: Convert to fraction form
    256,982.20/385,497.60 = 69,993.70/x
  3. Step 3: Cross multiply
    256,982.20x = 385,497.60 × 69,993.70
  4. Step 4: Simplify right side
    256,982.20x = 26,982,403,365.12
  5. Step 5: Solve for x
    x = 26,982,403,365.12/256,982.20
  6. Step 6: Final answer
    x = 104,997.17

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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.