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Finding the Fourth Proportional to 393,058.37, 542,422.37 and 223,301.81

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Solution

The fourth proportional to 393,058.37, 542,422.37 and 223,301.81 is: 308,157.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,058.37 : 542,422.37 = 223,301.81 : x
  2. Step 2: Convert to fraction form
    393,058.37/542,422.37 = 223,301.81/x
  3. Step 3: Cross multiply
    393,058.37x = 542,422.37 × 223,301.81
  4. Step 4: Simplify right side
    393,058.37x = 121,123,897,005.49
  5. Step 5: Solve for x
    x = 121,123,897,005.49/393,058.37
  6. Step 6: Final answer
    x = 308,157.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.