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Finding the Fourth Proportional to 275,221.67, 379,805.78 and 160,478.17

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Solution

The fourth proportional to 275,221.67, 379,805.78 and 160,478.17 is: 221,459.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,221.67 : 379,805.78 = 160,478.17 : x
  2. Step 2: Convert to fraction form
    275,221.67/379,805.78 = 160,478.17/x
  3. Step 3: Cross multiply
    275,221.67x = 379,805.78 × 160,478.17
  4. Step 4: Simplify right side
    275,221.67x = 60,950,535,981.50
  5. Step 5: Solve for x
    x = 60,950,535,981.50/275,221.67
  6. Step 6: Final answer
    x = 221,459.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.