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Finding the Fourth Proportional to 538,781.20, 808,210.20 and 164,803.60

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Solution

The fourth proportional to 538,781.20, 808,210.20 and 164,803.60 is: 247,217.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,781.20 : 808,210.20 = 164,803.60 : x
  2. Step 2: Convert to fraction form
    538,781.20/808,210.20 = 164,803.60/x
  3. Step 3: Cross multiply
    538,781.20x = 808,210.20 × 164,803.60
  4. Step 4: Simplify right side
    538,781.20x = 133,195,950,516.72
  5. Step 5: Solve for x
    x = 133,195,950,516.72/538,781.20
  6. Step 6: Final answer
    x = 247,217.15

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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.