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Finding the Fourth Proportional to 361,830.78, 498,999.69 and 225,877.28

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Solution

The fourth proportional to 361,830.78, 498,999.69 and 225,877.28 is: 311,506.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,830.78 : 498,999.69 = 225,877.28 : x
  2. Step 2: Convert to fraction form
    361,830.78/498,999.69 = 225,877.28/x
  3. Step 3: Cross multiply
    361,830.78x = 498,999.69 × 225,877.28
  4. Step 4: Simplify right side
    361,830.78x = 112,712,690,203.05
  5. Step 5: Solve for x
    x = 112,712,690,203.05/361,830.78
  6. Step 6: Final answer
    x = 311,506.64

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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.