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Finding the Fourth Proportional to 270,871.20, 405,385.20 and 237,693.60

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Solution

The fourth proportional to 270,871.20, 405,385.20 and 237,693.60 is: 355,731.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,871.20 : 405,385.20 = 237,693.60 : x
  2. Step 2: Convert to fraction form
    270,871.20/405,385.20 = 237,693.60/x
  3. Step 3: Cross multiply
    270,871.20x = 405,385.20 × 237,693.60
  4. Step 4: Simplify right side
    270,871.20x = 96,357,467,574.72
  5. Step 5: Solve for x
    x = 96,357,467,574.72/270,871.20
  6. Step 6: Final answer
    x = 355,731.68

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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.