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Finding the Fourth Proportional to 495,761.44, 743,509.32 and 215,212

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Solution

The fourth proportional to 495,761.44, 743,509.32 and 215,212 is: 322,760.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,761.44 : 743,509.32 = 215,212 : x
  2. Step 2: Convert to fraction form
    495,761.44/743,509.32 = 215,212/x
  3. Step 3: Cross multiply
    495,761.44x = 743,509.32 × 215,212
  4. Step 4: Simplify right side
    495,761.44x = 160,012,127,775.84
  5. Step 5: Solve for x
    x = 160,012,127,775.84/495,761.44
  6. Step 6: Final answer
    x = 322,760.33

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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.