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Finding the Fourth Proportional to 351,703.17, 485,320.82 and 198,754.65

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Solution

The fourth proportional to 351,703.17, 485,320.82 and 198,754.65 is: 274,264.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,703.17 : 485,320.82 = 198,754.65 : x
  2. Step 2: Convert to fraction form
    351,703.17/485,320.82 = 198,754.65/x
  3. Step 3: Cross multiply
    351,703.17x = 485,320.82 × 198,754.65
  4. Step 4: Simplify right side
    351,703.17x = 96,459,768,723.04
  5. Step 5: Solve for x
    x = 96,459,768,723.04/351,703.17
  6. Step 6: Final answer
    x = 274,264.71

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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.