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Finding the Fourth Proportional to 351,652.16, 485,269.88 and 206,455.52

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Solution

The fourth proportional to 351,652.16, 485,269.88 and 206,455.52 is: 284,902.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,652.16 : 485,269.88 = 206,455.52 : x
  2. Step 2: Convert to fraction form
    351,652.16/485,269.88 = 206,455.52/x
  3. Step 3: Cross multiply
    351,652.16x = 485,269.88 × 206,455.52
  4. Step 4: Simplify right side
    351,652.16x = 100,186,645,415.74
  5. Step 5: Solve for x
    x = 100,186,645,415.74/351,652.16
  6. Step 6: Final answer
    x = 284,902.69

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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.