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Finding the Fourth Proportional to 372,878.88, 514,580.80 and 203,112.64

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Solution

The fourth proportional to 372,878.88, 514,580.80 and 203,112.64 is: 280,299.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,878.88 : 514,580.80 = 203,112.64 : x
  2. Step 2: Convert to fraction form
    372,878.88/514,580.80 = 203,112.64/x
  3. Step 3: Cross multiply
    372,878.88x = 514,580.80 × 203,112.64
  4. Step 4: Simplify right side
    372,878.88x = 104,517,864,781.31
  5. Step 5: Solve for x
    x = 104,517,864,781.31/372,878.88
  6. Step 6: Final answer
    x = 280,299.77

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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.