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Finding the Fourth Proportional to 393,620.51, 590,282.54 and 127,309.52

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Solution

The fourth proportional to 393,620.51, 590,282.54 and 127,309.52 is: 190,916.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,620.51 : 590,282.54 = 127,309.52 : x
  2. Step 2: Convert to fraction form
    393,620.51/590,282.54 = 127,309.52/x
  3. Step 3: Cross multiply
    393,620.51x = 590,282.54 × 127,309.52
  4. Step 4: Simplify right side
    393,620.51x = 75,148,588,148.35
  5. Step 5: Solve for x
    x = 75,148,588,148.35/393,620.51
  6. Step 6: Final answer
    x = 190,916.34

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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.