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Finding the Fourth Proportional to 547,813.80, 821,809.02 and 168,734.46

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Solution

The fourth proportional to 547,813.80, 821,809.02 and 168,734.46 is: 253,128.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,813.80 : 821,809.02 = 168,734.46 : x
  2. Step 2: Convert to fraction form
    547,813.80/821,809.02 = 168,734.46/x
  3. Step 3: Cross multiply
    547,813.80x = 821,809.02 × 168,734.46
  4. Step 4: Simplify right side
    547,813.80x = 138,667,501,212.83
  5. Step 5: Solve for x
    x = 138,667,501,212.83/547,813.80
  6. Step 6: Final answer
    x = 253,128.89

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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.