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Finding the Fourth Proportional to 516,370.73, 774,556.70 and 161,386.61

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Solution

The fourth proportional to 516,370.73, 774,556.70 and 161,386.61 is: 242,080.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,370.73 : 774,556.70 = 161,386.61 : x
  2. Step 2: Convert to fraction form
    516,370.73/774,556.70 = 161,386.61/x
  3. Step 3: Cross multiply
    516,370.73x = 774,556.70 × 161,386.61
  4. Step 4: Simplify right side
    516,370.73x = 125,003,080,065.79
  5. Step 5: Solve for x
    x = 125,003,080,065.79/516,370.73
  6. Step 6: Final answer
    x = 242,080.10

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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.