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Finding the Fourth Proportional to 516,372.74, 774,559.70 and 161,388.62

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Solution

The fourth proportional to 516,372.74, 774,559.70 and 161,388.62 is: 242,083.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,372.74 : 774,559.70 = 161,388.62 : x
  2. Step 2: Convert to fraction form
    516,372.74/774,559.70 = 161,388.62/x
  3. Step 3: Cross multiply
    516,372.74x = 774,559.70 × 161,388.62
  4. Step 4: Simplify right side
    516,372.74x = 125,005,121,090.61
  5. Step 5: Solve for x
    x = 125,005,121,090.61/516,372.74
  6. Step 6: Final answer
    x = 242,083.11

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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.