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Finding the Fourth Proportional to 442,107.20, 663,160.80 and 274,145.60

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Solution

The fourth proportional to 442,107.20, 663,160.80 and 274,145.60 is: 411,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,107.20 : 663,160.80 = 274,145.60 : x
  2. Step 2: Convert to fraction form
    442,107.20/663,160.80 = 274,145.60/x
  3. Step 3: Cross multiply
    442,107.20x = 663,160.80 × 274,145.60
  4. Step 4: Simplify right side
    442,107.20x = 181,802,615,412.48
  5. Step 5: Solve for x
    x = 181,802,615,412.48/442,107.20
  6. Step 6: Final answer
    x = 411,218.40

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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.