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Finding the Fourth Proportional to 538,790.20, 808,223.70 and 164,812.60

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Solution

The fourth proportional to 538,790.20, 808,223.70 and 164,812.60 is: 247,230.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,790.20 : 808,223.70 = 164,812.60 : x
  2. Step 2: Convert to fraction form
    538,790.20/808,223.70 = 164,812.60/x
  3. Step 3: Cross multiply
    538,790.20x = 808,223.70 × 164,812.60
  4. Step 4: Simplify right side
    538,790.20x = 133,205,449,378.62
  5. Step 5: Solve for x
    x = 133,205,449,378.62/538,790.20
  6. Step 6: Final answer
    x = 247,230.65

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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.