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Finding the Fourth Proportional to 300,904.20, 450,991.80 and 174,301.20

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Solution

The fourth proportional to 300,904.20, 450,991.80 and 174,301.20 is: 261,240.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,904.20 : 450,991.80 = 174,301.20 : x
  2. Step 2: Convert to fraction form
    300,904.20/450,991.80 = 174,301.20/x
  3. Step 3: Cross multiply
    300,904.20x = 450,991.80 × 174,301.20
  4. Step 4: Simplify right side
    300,904.20x = 78,608,411,930.16
  5. Step 5: Solve for x
    x = 78,608,411,930.16/300,904.20
  6. Step 6: Final answer
    x = 261,240.66

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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.