Home / 521,541.57-782,189.60-142,372.16

Finding the Fourth Proportional to 521,541.57, 782,189.60 and 142,372.16

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Solution

The fourth proportional to 521,541.57, 782,189.60 and 142,372.16 is: 213,524.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,541.57 : 782,189.60 = 142,372.16 : x
  2. Step 2: Convert to fraction form
    521,541.57/782,189.60 = 142,372.16/x
  3. Step 3: Cross multiply
    521,541.57x = 782,189.60 × 142,372.16
  4. Step 4: Simplify right side
    521,541.57x = 111,362,022,881.54
  5. Step 5: Solve for x
    x = 111,362,022,881.54/521,541.57
  6. Step 6: Final answer
    x = 213,524.73

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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.