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Finding the Fourth Proportional to 351,573.16, 485,086.96 and 208,308.48

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Solution

The fourth proportional to 351,573.16, 485,086.96 and 208,308.48 is: 287,415.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,573.16 : 485,086.96 = 208,308.48 : x
  2. Step 2: Convert to fraction form
    351,573.16/485,086.96 = 208,308.48/x
  3. Step 3: Cross multiply
    351,573.16x = 485,086.96 × 208,308.48
  4. Step 4: Simplify right side
    351,573.16x = 101,047,727,305.42
  5. Step 5: Solve for x
    x = 101,047,727,305.42/351,573.16
  6. Step 6: Final answer
    x = 287,415.93

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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.