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Finding the Fourth Proportional to 521,362.90, 782,057.94 and 166,376.44

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Solution

The fourth proportional to 521,362.90, 782,057.94 and 166,376.44 is: 249,569.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,362.90 : 782,057.94 = 166,376.44 : x
  2. Step 2: Convert to fraction form
    521,362.90/782,057.94 = 166,376.44/x
  3. Step 3: Cross multiply
    521,362.90x = 782,057.94 × 166,376.44
  4. Step 4: Simplify right side
    521,362.90x = 130,116,015,930.93
  5. Step 5: Solve for x
    x = 130,116,015,930.93/521,362.90
  6. Step 6: Final answer
    x = 249,569.00

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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.