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Finding the Fourth Proportional to 557,280.71, 769,282.82 and 376,237.88

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Solution

The fourth proportional to 557,280.71, 769,282.82 and 376,237.88 is: 519,367.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,280.71 : 769,282.82 = 376,237.88 : x
  2. Step 2: Convert to fraction form
    557,280.71/769,282.82 = 376,237.88/x
  3. Step 3: Cross multiply
    557,280.71x = 769,282.82 × 376,237.88
  4. Step 4: Simplify right side
    557,280.71x = 289,433,338,257.82
  5. Step 5: Solve for x
    x = 289,433,338,257.82/557,280.71
  6. Step 6: Final answer
    x = 519,367.23

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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.