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Finding the Fourth Proportional to 547,621.29, 821,509.83 and 168,573.65

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Solution

The fourth proportional to 547,621.29, 821,509.83 and 168,573.65 is: 252,884.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,621.29 : 821,509.83 = 168,573.65 : x
  2. Step 2: Convert to fraction form
    547,621.29/821,509.83 = 168,573.65/x
  3. Step 3: Cross multiply
    547,621.29x = 821,509.83 × 168,573.65
  4. Step 4: Simplify right side
    547,621.29x = 138,484,906,446.43
  5. Step 5: Solve for x
    x = 138,484,906,446.43/547,621.29
  6. Step 6: Final answer
    x = 252,884.45

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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.