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Finding the Fourth Proportional to 393,662.18, 590,586.98 and 127,422.68

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Solution

The fourth proportional to 393,662.18, 590,586.98 and 127,422.68 is: 191,164.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,662.18 : 590,586.98 = 127,422.68 : x
  2. Step 2: Convert to fraction form
    393,662.18/590,586.98 = 127,422.68/x
  3. Step 3: Cross multiply
    393,662.18x = 590,586.98 × 127,422.68
  4. Step 4: Simplify right side
    393,662.18x = 75,254,172,174.66
  5. Step 5: Solve for x
    x = 75,254,172,174.66/393,662.18
  6. Step 6: Final answer
    x = 191,164.34

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1.5x scale

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.