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Finding the Fourth Proportional to 192,387.66, 288,457.10 and 103,704.81

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Solution

The fourth proportional to 192,387.66, 288,457.10 and 103,704.81 is: 155,490.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,387.66 : 288,457.10 = 103,704.81 : x
  2. Step 2: Convert to fraction form
    192,387.66/288,457.10 = 103,704.81/x
  3. Step 3: Cross multiply
    192,387.66x = 288,457.10 × 103,704.81
  4. Step 4: Simplify right side
    192,387.66x = 29,914,387,537.31
  5. Step 5: Solve for x
    x = 29,914,387,537.31/192,387.66
  6. Step 6: Final answer
    x = 155,490.16

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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.