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Finding the Fourth Proportional to 318,399.80, 439,395.36 and 182,431.01

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Solution

The fourth proportional to 318,399.80, 439,395.36 and 182,431.01 is: 251,756.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,399.80 : 439,395.36 = 182,431.01 : x
  2. Step 2: Convert to fraction form
    318,399.80/439,395.36 = 182,431.01/x
  3. Step 3: Cross multiply
    318,399.80x = 439,395.36 × 182,431.01
  4. Step 4: Simplify right side
    318,399.80x = 80,159,337,117.14
  5. Step 5: Solve for x
    x = 80,159,337,117.14/318,399.80
  6. Step 6: Final answer
    x = 251,756.87

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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.