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Finding the Fourth Proportional to 521,666.88, 782,434.98 and 166,651.44

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Solution

The fourth proportional to 521,666.88, 782,434.98 and 166,651.44 is: 249,956.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,666.88 : 782,434.98 = 166,651.44 : x
  2. Step 2: Convert to fraction form
    521,666.88/782,434.98 = 166,651.44/x
  3. Step 3: Cross multiply
    521,666.88x = 782,434.98 × 166,651.44
  4. Step 4: Simplify right side
    521,666.88x = 130,393,916,123.37
  5. Step 5: Solve for x
    x = 130,393,916,123.37/521,666.88
  6. Step 6: Final answer
    x = 249,956.29

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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.