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Finding the Fourth Proportional to 279,432.79, 384,882.64 and 214,778.39

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Solution

The fourth proportional to 279,432.79, 384,882.64 and 214,778.39 is: 295,829.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,432.79 : 384,882.64 = 214,778.39 : x
  2. Step 2: Convert to fraction form
    279,432.79/384,882.64 = 214,778.39/x
  3. Step 3: Cross multiply
    279,432.79x = 384,882.64 × 214,778.39
  4. Step 4: Simplify right side
    279,432.79x = 82,664,471,296.79
  5. Step 5: Solve for x
    x = 82,664,471,296.79/279,432.79
  6. Step 6: Final answer
    x = 295,829.53

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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.