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Finding the Fourth Proportional to 543,349.90, 815,020.80 and 164,269.90

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Solution

The fourth proportional to 543,349.90, 815,020.80 and 164,269.90 is: 246,403.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,349.90 : 815,020.80 = 164,269.90 : x
  2. Step 2: Convert to fraction form
    543,349.90/815,020.80 = 164,269.90/x
  3. Step 3: Cross multiply
    543,349.90x = 815,020.80 × 164,269.90
  4. Step 4: Simplify right side
    543,349.90x = 133,883,385,313.92
  5. Step 5: Solve for x
    x = 133,883,385,313.92/543,349.90
  6. Step 6: Final answer
    x = 246,403.63

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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.