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Finding the Fourth Proportional to 545,971.87, 818,959.90 and 166,891.15

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Solution

The fourth proportional to 545,971.87, 818,959.90 and 166,891.15 is: 250,337.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,971.87 : 818,959.90 = 166,891.15 : x
  2. Step 2: Convert to fraction form
    545,971.87/818,959.90 = 166,891.15/x
  3. Step 3: Cross multiply
    545,971.87x = 818,959.90 × 166,891.15
  4. Step 4: Simplify right side
    545,971.87x = 136,677,155,420.09
  5. Step 5: Solve for x
    x = 136,677,155,420.09/545,971.87
  6. Step 6: Final answer
    x = 250,337.36

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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.