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Finding the Fourth Proportional to 493,021.44, 680,330.88 and 278,213.76

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Solution

The fourth proportional to 493,021.44, 680,330.88 and 278,213.76 is: 383,913.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,021.44 : 680,330.88 = 278,213.76 : x
  2. Step 2: Convert to fraction form
    493,021.44/680,330.88 = 278,213.76/x
  3. Step 3: Cross multiply
    493,021.44x = 680,330.88 × 278,213.76
  4. Step 4: Simplify right side
    493,021.44x = 189,277,412,168.91
  5. Step 5: Solve for x
    x = 189,277,412,168.91/493,021.44
  6. Step 6: Final answer
    x = 383,913.15

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1.5x scale

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.