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Finding the Fourth Proportional to 356,377.65, 491,801.13 and 213,137.69

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Solution

The fourth proportional to 356,377.65, 491,801.13 and 213,137.69 is: 294,130.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,377.65 : 491,801.13 = 213,137.69 : x
  2. Step 2: Convert to fraction form
    356,377.65/491,801.13 = 213,137.69/x
  3. Step 3: Cross multiply
    356,377.65x = 491,801.13 × 213,137.69
  4. Step 4: Simplify right side
    356,377.65x = 104,821,356,787.59
  5. Step 5: Solve for x
    x = 104,821,356,787.59/356,377.65
  6. Step 6: Final answer
    x = 294,130.00

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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.