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Finding the Fourth Proportional to 393,904.60, 590,929.80 and 127,673.80

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Solution

The fourth proportional to 393,904.60, 590,929.80 and 127,673.80 is: 191,534.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,904.60 : 590,929.80 = 127,673.80 : x
  2. Step 2: Convert to fraction form
    393,904.60/590,929.80 = 127,673.80/x
  3. Step 3: Cross multiply
    393,904.60x = 590,929.80 × 127,673.80
  4. Step 4: Simplify right side
    393,904.60x = 75,446,253,099.24
  5. Step 5: Solve for x
    x = 75,446,253,099.24/393,904.60
  6. Step 6: Final answer
    x = 191,534.33

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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.