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Finding the Fourth Proportional to 270,429.80, 405,644.70 and 176,426.60

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Solution

The fourth proportional to 270,429.80, 405,644.70 and 176,426.60 is: 264,639.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,429.80 : 405,644.70 = 176,426.60 : x
  2. Step 2: Convert to fraction form
    270,429.80/405,644.70 = 176,426.60/x
  3. Step 3: Cross multiply
    270,429.80x = 405,644.70 × 176,426.60
  4. Step 4: Simplify right side
    270,429.80x = 71,566,515,229.02
  5. Step 5: Solve for x
    x = 71,566,515,229.02/270,429.80
  6. Step 6: Final answer
    x = 264,639.90

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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.