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Finding the Fourth Proportional to 543,515.60, 815,301.80 and 164,426.79

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Solution

The fourth proportional to 543,515.60, 815,301.80 and 164,426.79 is: 246,648.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,515.60 : 815,301.80 = 164,426.79 : x
  2. Step 2: Convert to fraction form
    543,515.60/815,301.80 = 164,426.79/x
  3. Step 3: Cross multiply
    543,515.60x = 815,301.80 × 164,426.79
  4. Step 4: Simplify right side
    543,515.60x = 134,057,457,033.09
  5. Step 5: Solve for x
    x = 134,057,457,033.09/543,515.60
  6. Step 6: Final answer
    x = 246,648.78

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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.