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Finding the Fourth Proportional to 521,340.12, 782,053.92 and 166,404.60

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Solution

The fourth proportional to 521,340.12, 782,053.92 and 166,404.60 is: 249,620.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,340.12 : 782,053.92 = 166,404.60 : x
  2. Step 2: Convert to fraction form
    521,340.12/782,053.92 = 166,404.60/x
  3. Step 3: Cross multiply
    521,340.12x = 782,053.92 × 166,404.60
  4. Step 4: Simplify right side
    521,340.12x = 130,137,369,736.03
  5. Step 5: Solve for x
    x = 130,137,369,736.03/521,340.12
  6. Step 6: Final answer
    x = 249,620.86

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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.