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Finding the Fourth Proportional to 447,978.88, 618,103.36 and 254,343.68

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Solution

The fourth proportional to 447,978.88, 618,103.36 and 254,343.68 is: 350,933.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,978.88 : 618,103.36 = 254,343.68 : x
  2. Step 2: Convert to fraction form
    447,978.88/618,103.36 = 254,343.68/x
  3. Step 3: Cross multiply
    447,978.88x = 618,103.36 × 254,343.68
  4. Step 4: Simplify right side
    447,978.88x = 157,210,683,202.77
  5. Step 5: Solve for x
    x = 157,210,683,202.77/447,978.88
  6. Step 6: Final answer
    x = 350,933.25

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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.