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Finding the Fourth Proportional to 521,756.70, 782,562.15 and 166,806.60

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Solution

The fourth proportional to 521,756.70, 782,562.15 and 166,806.60 is: 250,186.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,756.70 : 782,562.15 = 166,806.60 : x
  2. Step 2: Convert to fraction form
    521,756.70/782,562.15 = 166,806.60/x
  3. Step 3: Cross multiply
    521,756.70x = 782,562.15 × 166,806.60
  4. Step 4: Simplify right side
    521,756.70x = 130,536,531,530.19
  5. Step 5: Solve for x
    x = 130,536,531,530.19/521,756.70
  6. Step 6: Final answer
    x = 250,186.59

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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.