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Finding the Fourth Proportional to 372,385.72, 513,894.54 and 202,620.88

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Solution

The fourth proportional to 372,385.72, 513,894.54 and 202,620.88 is: 279,618.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,385.72 : 513,894.54 = 202,620.88 : x
  2. Step 2: Convert to fraction form
    372,385.72/513,894.54 = 202,620.88/x
  3. Step 3: Cross multiply
    372,385.72x = 513,894.54 × 202,620.88
  4. Step 4: Simplify right side
    372,385.72x = 104,125,763,922.00
  5. Step 5: Solve for x
    x = 104,125,763,922.00/372,385.72
  6. Step 6: Final answer
    x = 279,618.04

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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.