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Finding the Fourth Proportional to 351,951.24, 485,763.30 and 208,790.76

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Solution

The fourth proportional to 351,951.24, 485,763.30 and 208,790.76 is: 288,173.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,951.24 : 485,763.30 = 208,790.76 : x
  2. Step 2: Convert to fraction form
    351,951.24/485,763.30 = 208,790.76/x
  3. Step 3: Cross multiply
    351,951.24x = 485,763.30 × 208,790.76
  4. Step 4: Simplify right side
    351,951.24x = 101,422,888,587.11
  5. Step 5: Solve for x
    x = 101,422,888,587.11/351,951.24
  6. Step 6: Final answer
    x = 288,173.12

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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.