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Finding the Fourth Proportional to 521,377.65, 782,080.07 and 166,391.19

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Solution

The fourth proportional to 521,377.65, 782,080.07 and 166,391.19 is: 249,591.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,377.65 : 782,080.07 = 166,391.19 : x
  2. Step 2: Convert to fraction form
    521,377.65/782,080.07 = 166,391.19/x
  3. Step 3: Cross multiply
    521,377.65x = 782,080.07 × 166,391.19
  4. Step 4: Simplify right side
    521,377.65x = 130,131,232,690.63
  5. Step 5: Solve for x
    x = 130,131,232,690.63/521,377.65
  6. Step 6: Final answer
    x = 249,591.12

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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.