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Finding the Fourth Proportional to 346,744.80, 518,965.20 and 251,704.80

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Solution

The fourth proportional to 346,744.80, 518,965.20 and 251,704.80 is: 376,720.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,744.80 : 518,965.20 = 251,704.80 : x
  2. Step 2: Convert to fraction form
    346,744.80/518,965.20 = 251,704.80/x
  3. Step 3: Cross multiply
    346,744.80x = 518,965.20 × 251,704.80
  4. Step 4: Simplify right side
    346,744.80x = 130,626,031,872.96
  5. Step 5: Solve for x
    x = 130,626,031,872.96/346,744.80
  6. Step 6: Final answer
    x = 376,720.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.