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Finding the Fourth Proportional to 371,951.72, 513,317.22 and 208,623.56

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Solution

The fourth proportional to 371,951.72, 513,317.22 and 208,623.56 is: 287,913.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,951.72 : 513,317.22 = 208,623.56 : x
  2. Step 2: Convert to fraction form
    371,951.72/513,317.22 = 208,623.56/x
  3. Step 3: Cross multiply
    371,951.72x = 513,317.22 × 208,623.56
  4. Step 4: Simplify right side
    371,951.72x = 107,090,065,845.70
  5. Step 5: Solve for x
    x = 107,090,065,845.70/371,951.72
  6. Step 6: Final answer
    x = 287,913.89

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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.