Home / 458,388.70-687,581.43-142,845.82

Finding the Fourth Proportional to 458,388.70, 687,581.43 and 142,845.82

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Solution

The fourth proportional to 458,388.70, 687,581.43 and 142,845.82 is: 214,268.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,388.70 : 687,581.43 = 142,845.82 : x
  2. Step 2: Convert to fraction form
    458,388.70/687,581.43 = 142,845.82/x
  3. Step 3: Cross multiply
    458,388.70x = 687,581.43 × 142,845.82
  4. Step 4: Simplify right side
    458,388.70x = 98,218,133,185.12
  5. Step 5: Solve for x
    x = 98,218,133,185.12/458,388.70
  6. Step 6: Final answer
    x = 214,268.23

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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.