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Finding the Fourth Proportional to 371,760.60, 557,025.30 and 213,713.40

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Solution

The fourth proportional to 371,760.60, 557,025.30 and 213,713.40 is: 320,216.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,760.60 : 557,025.30 = 213,713.40 : x
  2. Step 2: Convert to fraction form
    371,760.60/557,025.30 = 213,713.40/x
  3. Step 3: Cross multiply
    371,760.60x = 557,025.30 × 213,713.40
  4. Step 4: Simplify right side
    371,760.60x = 119,043,770,749.02
  5. Step 5: Solve for x
    x = 119,043,770,749.02/371,760.60
  6. Step 6: Final answer
    x = 320,216.21

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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.