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Finding the Fourth Proportional to 521,839.92, 782,898.30 and 166,860.48

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Solution

The fourth proportional to 521,839.92, 782,898.30 and 166,860.48 is: 250,334.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,839.92 : 782,898.30 = 166,860.48 : x
  2. Step 2: Convert to fraction form
    521,839.92/782,898.30 = 166,860.48/x
  3. Step 3: Cross multiply
    521,839.92x = 782,898.30 × 166,860.48
  4. Step 4: Simplify right side
    521,839.92x = 130,634,786,129.18
  5. Step 5: Solve for x
    x = 130,634,786,129.18/521,839.92
  6. Step 6: Final answer
    x = 250,334.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.