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Finding the Fourth Proportional to 448,172.42, 618,462.20 and 251,932.91

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Solution

The fourth proportional to 448,172.42, 618,462.20 and 251,932.91 is: 347,658.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,172.42 : 618,462.20 = 251,932.91 : x
  2. Step 2: Convert to fraction form
    448,172.42/618,462.20 = 251,932.91/x
  3. Step 3: Cross multiply
    448,172.42x = 618,462.20 × 251,932.91
  4. Step 4: Simplify right side
    448,172.42x = 155,810,977,419.03
  5. Step 5: Solve for x
    x = 155,810,977,419.03/448,172.42
  6. Step 6: Final answer
    x = 347,658.56

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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.