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Finding the Fourth Proportional to 518,558.90, 776,963.55 and 251,744.90

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Solution

The fourth proportional to 518,558.90, 776,963.55 and 251,744.90 is: 377,192.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,558.90 : 776,963.55 = 251,744.90 : x
  2. Step 2: Convert to fraction form
    518,558.90/776,963.55 = 251,744.90/x
  3. Step 3: Cross multiply
    518,558.90x = 776,963.55 × 251,744.90
  4. Step 4: Simplify right side
    518,558.90x = 195,596,611,198.40
  5. Step 5: Solve for x
    x = 195,596,611,198.40/518,558.90
  6. Step 6: Final answer
    x = 377,192.66

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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.