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Finding the Fourth Proportional to 269,525.80, 403,802.70 and 128,974.60

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Solution

The fourth proportional to 269,525.80, 403,802.70 and 128,974.60 is: 193,229.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,525.80 : 403,802.70 = 128,974.60 : x
  2. Step 2: Convert to fraction form
    269,525.80/403,802.70 = 128,974.60/x
  3. Step 3: Cross multiply
    269,525.80x = 403,802.70 × 128,974.60
  4. Step 4: Simplify right side
    269,525.80x = 52,080,291,711.42
  5. Step 5: Solve for x
    x = 52,080,291,711.42/269,525.80
  6. Step 6: Final answer
    x = 193,229.34

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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.