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Finding the Fourth Proportional to 262,429.60, 393,644.40 and 169,040.80

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Solution

The fourth proportional to 262,429.60, 393,644.40 and 169,040.80 is: 253,561.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,429.60 : 393,644.40 = 169,040.80 : x
  2. Step 2: Convert to fraction form
    262,429.60/393,644.40 = 169,040.80/x
  3. Step 3: Cross multiply
    262,429.60x = 393,644.40 × 169,040.80
  4. Step 4: Simplify right side
    262,429.60x = 66,541,964,291.52
  5. Step 5: Solve for x
    x = 66,541,964,291.52/262,429.60
  6. Step 6: Final answer
    x = 253,561.20

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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.