Home / 521,816.55-782,836.53-161,979.51

Finding the Fourth Proportional to 521,816.55, 782,836.53 and 161,979.51

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Solution

The fourth proportional to 521,816.55, 782,836.53 and 161,979.51 is: 243,003.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,816.55 : 782,836.53 = 161,979.51 : x
  2. Step 2: Convert to fraction form
    521,816.55/782,836.53 = 161,979.51/x
  3. Step 3: Cross multiply
    521,816.55x = 782,836.53 × 161,979.51
  4. Step 4: Simplify right side
    521,816.55x = 126,803,477,539.50
  5. Step 5: Solve for x
    x = 126,803,477,539.50/521,816.55
  6. Step 6: Final answer
    x = 243,003.94

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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.