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Finding the Fourth Proportional to 379,277.73, 523,358.64 and 209,501.73

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Solution

The fourth proportional to 379,277.73, 523,358.64 and 209,501.73 is: 289,087.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,277.73 : 523,358.64 = 209,501.73 : x
  2. Step 2: Convert to fraction form
    379,277.73/523,358.64 = 209,501.73/x
  3. Step 3: Cross multiply
    379,277.73x = 523,358.64 × 209,501.73
  4. Step 4: Simplify right side
    379,277.73x = 109,644,540,490.45
  5. Step 5: Solve for x
    x = 109,644,540,490.45/379,277.73
  6. Step 6: Final answer
    x = 289,087.74

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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.