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Finding the Fourth Proportional to 543,628.90, 815,439.30 and 164,548.90

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Solution

The fourth proportional to 543,628.90, 815,439.30 and 164,548.90 is: 246,822.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,628.90 : 815,439.30 = 164,548.90 : x
  2. Step 2: Convert to fraction form
    543,628.90/815,439.30 = 164,548.90/x
  3. Step 3: Cross multiply
    543,628.90x = 815,439.30 × 164,548.90
  4. Step 4: Simplify right side
    543,628.90x = 134,179,639,831.77
  5. Step 5: Solve for x
    x = 134,179,639,831.77/543,628.90
  6. Step 6: Final answer
    x = 246,822.12

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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.