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Finding the Fourth Proportional to 253,818.40, 380,727.60 and 175,021.60

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Solution

The fourth proportional to 253,818.40, 380,727.60 and 175,021.60 is: 262,532.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,818.40 : 380,727.60 = 175,021.60 : x
  2. Step 2: Convert to fraction form
    253,818.40/380,727.60 = 175,021.60/x
  3. Step 3: Cross multiply
    253,818.40x = 380,727.60 × 175,021.60
  4. Step 4: Simplify right side
    253,818.40x = 66,635,553,716.16
  5. Step 5: Solve for x
    x = 66,635,553,716.16/253,818.40
  6. Step 6: Final answer
    x = 262,532.40

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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.