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Finding the Fourth Proportional to 318,906.18, 440,052.75 and 181,075.77

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Solution

The fourth proportional to 318,906.18, 440,052.75 and 181,075.77 is: 249,863.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,906.18 : 440,052.75 = 181,075.77 : x
  2. Step 2: Convert to fraction form
    318,906.18/440,052.75 = 181,075.77/x
  3. Step 3: Cross multiply
    318,906.18x = 440,052.75 × 181,075.77
  4. Step 4: Simplify right side
    318,906.18x = 79,682,890,546.87
  5. Step 5: Solve for x
    x = 79,682,890,546.87/318,906.18
  6. Step 6: Final answer
    x = 249,863.11

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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.