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Finding the Fourth Proportional to 356,164.80, 533,793.60 and 145,564.80

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Solution

The fourth proportional to 356,164.80, 533,793.60 and 145,564.80 is: 218,161.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,164.80 : 533,793.60 = 145,564.80 : x
  2. Step 2: Convert to fraction form
    356,164.80/533,793.60 = 145,564.80/x
  3. Step 3: Cross multiply
    356,164.80x = 533,793.60 × 145,564.80
  4. Step 4: Simplify right side
    356,164.80x = 77,701,558,625.28
  5. Step 5: Solve for x
    x = 77,701,558,625.28/356,164.80
  6. Step 6: Final answer
    x = 218,161.81

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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.