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Finding the Fourth Proportional to 516,351.31, 774,830.10 and 216,808.85

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Solution

The fourth proportional to 516,351.31, 774,830.10 and 216,808.85 is: 325,340.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,351.31 : 774,830.10 = 216,808.85 : x
  2. Step 2: Convert to fraction form
    516,351.31/774,830.10 = 216,808.85/x
  3. Step 3: Cross multiply
    516,351.31x = 774,830.10 × 216,808.85
  4. Step 4: Simplify right side
    516,351.31x = 167,990,022,926.39
  5. Step 5: Solve for x
    x = 167,990,022,926.39/516,351.31
  6. Step 6: Final answer
    x = 325,340.56

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1.5x scale

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.