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Finding the Fourth Proportional to 373,494.69, 515,388.06 and 212,318.28

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Solution

The fourth proportional to 373,494.69, 515,388.06 and 212,318.28 is: 292,979.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,494.69 : 515,388.06 = 212,318.28 : x
  2. Step 2: Convert to fraction form
    373,494.69/515,388.06 = 212,318.28/x
  3. Step 3: Cross multiply
    373,494.69x = 515,388.06 × 212,318.28
  4. Step 4: Simplify right side
    373,494.69x = 109,426,306,431.74
  5. Step 5: Solve for x
    x = 109,426,306,431.74/373,494.69
  6. Step 6: Final answer
    x = 292,979.55

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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.