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Finding the Fourth Proportional to 351,620.65, 485,237.69 and 190,475.20

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Solution

The fourth proportional to 351,620.65, 485,237.69 and 190,475.20 is: 262,856.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,620.65 : 485,237.69 = 190,475.20 : x
  2. Step 2: Convert to fraction form
    351,620.65/485,237.69 = 190,475.20/x
  3. Step 3: Cross multiply
    351,620.65x = 485,237.69 × 190,475.20
  4. Step 4: Simplify right side
    351,620.65x = 92,425,746,050.29
  5. Step 5: Solve for x
    x = 92,425,746,050.29/351,620.65
  6. Step 6: Final answer
    x = 262,856.42

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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.