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Finding the Fourth Proportional to 521,228.70, 781,903.80 and 166,278.60

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Solution

The fourth proportional to 521,228.70, 781,903.80 and 166,278.60 is: 249,437.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,228.70 : 781,903.80 = 166,278.60 : x
  2. Step 2: Convert to fraction form
    521,228.70/781,903.80 = 166,278.60/x
  3. Step 3: Cross multiply
    521,228.70x = 781,903.80 × 166,278.60
  4. Step 4: Simplify right side
    521,228.70x = 130,013,869,198.68
  5. Step 5: Solve for x
    x = 130,013,869,198.68/521,228.70
  6. Step 6: Final answer
    x = 249,437.28

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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.