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Finding the Fourth Proportional to 351,896.40, 485,549.64 and 208,783.44

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Solution

The fourth proportional to 351,896.40, 485,549.64 and 208,783.44 is: 288,081.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,896.40 : 485,549.64 = 208,783.44 : x
  2. Step 2: Convert to fraction form
    351,896.40/485,549.64 = 208,783.44/x
  3. Step 3: Cross multiply
    351,896.40x = 485,549.64 × 208,783.44
  4. Step 4: Simplify right side
    351,896.40x = 101,374,724,129.96
  5. Step 5: Solve for x
    x = 101,374,724,129.96/351,896.40
  6. Step 6: Final answer
    x = 288,081.16

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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.