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Finding the Fourth Proportional to 516,722.68, 774,665.79 and 161,553.88

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Solution

The fourth proportional to 516,722.68, 774,665.79 and 161,553.88 is: 242,200.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,722.68 : 774,665.79 = 161,553.88 : x
  2. Step 2: Convert to fraction form
    516,722.68/774,665.79 = 161,553.88/x
  3. Step 3: Cross multiply
    516,722.68x = 774,665.79 × 161,553.88
  4. Step 4: Simplify right side
    516,722.68x = 125,150,264,077.77
  5. Step 5: Solve for x
    x = 125,150,264,077.77/516,722.68
  6. Step 6: Final answer
    x = 242,200.06

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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.