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Finding the Fourth Proportional to 373,129.94, 514,933.09 and 212,012.28

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Solution

The fourth proportional to 373,129.94, 514,933.09 and 212,012.28 is: 292,584.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,129.94 : 514,933.09 = 212,012.28 : x
  2. Step 2: Convert to fraction form
    373,129.94/514,933.09 = 212,012.28/x
  3. Step 3: Cross multiply
    373,129.94x = 514,933.09 × 212,012.28
  4. Step 4: Simplify right side
    373,129.94x = 109,172,137,398.28
  5. Step 5: Solve for x
    x = 109,172,137,398.28/373,129.94
  6. Step 6: Final answer
    x = 292,584.77

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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.