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Finding the Fourth Proportional to 263,705.30, 363,905.81 and 154,807.89

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Solution

The fourth proportional to 263,705.30, 363,905.81 and 154,807.89 is: 213,630.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,705.30 : 363,905.81 = 154,807.89 : x
  2. Step 2: Convert to fraction form
    263,705.30/363,905.81 = 154,807.89/x
  3. Step 3: Cross multiply
    263,705.30x = 363,905.81 × 154,807.89
  4. Step 4: Simplify right side
    263,705.30x = 56,335,488,785.31
  5. Step 5: Solve for x
    x = 56,335,488,785.31/263,705.30
  6. Step 6: Final answer
    x = 213,630.48

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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.