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Finding the Fourth Proportional to 521,101.60, 781,695.60 and 166,105.60

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Solution

The fourth proportional to 521,101.60, 781,695.60 and 166,105.60 is: 249,172.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,101.60 : 781,695.60 = 166,105.60 : x
  2. Step 2: Convert to fraction form
    521,101.60/781,695.60 = 166,105.60/x
  3. Step 3: Cross multiply
    521,101.60x = 781,695.60 × 166,105.60
  4. Step 4: Simplify right side
    521,101.60x = 129,844,016,655.36
  5. Step 5: Solve for x
    x = 129,844,016,655.36/521,101.60
  6. Step 6: Final answer
    x = 249,172.17

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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.