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Finding the Fourth Proportional to 192,420.66, 288,677.97 and 135,605.40

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Solution

The fourth proportional to 192,420.66, 288,677.97 and 135,605.40 is: 203,441.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,420.66 : 288,677.97 = 135,605.40 : x
  2. Step 2: Convert to fraction form
    192,420.66/288,677.97 = 135,605.40/x
  3. Step 3: Cross multiply
    192,420.66x = 288,677.97 × 135,605.40
  4. Step 4: Simplify right side
    192,420.66x = 39,146,291,593.04
  5. Step 5: Solve for x
    x = 39,146,291,593.04/192,420.66
  6. Step 6: Final answer
    x = 203,441.21

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1.5x scale

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.