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Finding the Fourth Proportional to 495,311.52, 683,537.22 and 280,445.52

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Solution

The fourth proportional to 495,311.52, 683,537.22 and 280,445.52 is: 387,018.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,311.52 : 683,537.22 = 280,445.52 : x
  2. Step 2: Convert to fraction form
    495,311.52/683,537.22 = 280,445.52/x
  3. Step 3: Cross multiply
    495,311.52x = 683,537.22 × 280,445.52
  4. Step 4: Simplify right side
    495,311.52x = 191,694,951,102.25
  5. Step 5: Solve for x
    x = 191,694,951,102.25/495,311.52
  6. Step 6: Final answer
    x = 387,018.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.