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Finding the Fourth Proportional to 351,510.05, 485,077.88 and 190,363.79

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Solution

The fourth proportional to 351,510.05, 485,077.88 and 190,363.79 is: 262,698.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,510.05 : 485,077.88 = 190,363.79 : x
  2. Step 2: Convert to fraction form
    351,510.05/485,077.88 = 190,363.79/x
  3. Step 3: Cross multiply
    351,510.05x = 485,077.88 × 190,363.79
  4. Step 4: Simplify right side
    351,510.05x = 92,341,262,730.15
  5. Step 5: Solve for x
    x = 92,341,262,730.15/351,510.05
  6. Step 6: Final answer
    x = 262,698.78

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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.