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Finding the Fourth Proportional to 355,320.61, 490,184.94 and 211,997.32

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Solution

The fourth proportional to 355,320.61, 490,184.94 and 211,997.32 is: 292,462.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,320.61 : 490,184.94 = 211,997.32 : x
  2. Step 2: Convert to fraction form
    355,320.61/490,184.94 = 211,997.32/x
  3. Step 3: Cross multiply
    355,320.61x = 490,184.94 × 211,997.32
  4. Step 4: Simplify right side
    355,320.61x = 103,917,893,584.36
  5. Step 5: Solve for x
    x = 103,917,893,584.36/355,320.61
  6. Step 6: Final answer
    x = 292,462.33

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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.