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Finding the Fourth Proportional to 495,311.58, 683,532.65 and 280,493.51

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Solution

The fourth proportional to 495,311.58, 683,532.65 and 280,493.51 is: 387,082.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,311.58 : 683,532.65 = 280,493.51 : x
  2. Step 2: Convert to fraction form
    495,311.58/683,532.65 = 280,493.51/x
  3. Step 3: Cross multiply
    495,311.58x = 683,532.65 × 280,493.51
  4. Step 4: Simplify right side
    495,311.58x = 191,726,469,481.67
  5. Step 5: Solve for x
    x = 191,726,469,481.67/495,311.58
  6. Step 6: Final answer
    x = 387,082.55

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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.