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Finding the Fourth Proportional to 211,108.92, 316,665 and 61,359.36

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Solution

The fourth proportional to 211,108.92, 316,665 and 61,359.36 is: 92,039.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,108.92 : 316,665 = 61,359.36 : x
  2. Step 2: Convert to fraction form
    211,108.92/316,665 = 61,359.36/x
  3. Step 3: Cross multiply
    211,108.92x = 316,665 × 61,359.36
  4. Step 4: Simplify right side
    211,108.92x = 19,430,361,734.40
  5. Step 5: Solve for x
    x = 19,430,361,734.40/211,108.92
  6. Step 6: Final answer
    x = 92,039.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.