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Finding the Fourth Proportional to 371,763.60, 557,029.80 and 213,716.40

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Solution

The fourth proportional to 371,763.60, 557,029.80 and 213,716.40 is: 320,220.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,763.60 : 557,029.80 = 213,716.40 : x
  2. Step 2: Convert to fraction form
    371,763.60/557,029.80 = 213,716.40/x
  3. Step 3: Cross multiply
    371,763.60x = 557,029.80 × 213,716.40
  4. Step 4: Simplify right side
    371,763.60x = 119,046,403,548.72
  5. Step 5: Solve for x
    x = 119,046,403,548.72/371,763.60
  6. Step 6: Final answer
    x = 320,220.71

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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.