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Finding the Fourth Proportional to 393,569.80, 591,010.80 and 216,204.10

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Solution

The fourth proportional to 393,569.80, 591,010.80 and 216,204.10 is: 324,666.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,569.80 : 591,010.80 = 216,204.10 : x
  2. Step 2: Convert to fraction form
    393,569.80/591,010.80 = 216,204.10/x
  3. Step 3: Cross multiply
    393,569.80x = 591,010.80 × 216,204.10
  4. Step 4: Simplify right side
    393,569.80x = 127,778,958,104.28
  5. Step 5: Solve for x
    x = 127,778,958,104.28/393,569.80
  6. Step 6: Final answer
    x = 324,666.57

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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.