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Finding the Fourth Proportional to 479,639.04, 661,903.31 and 261,848.06

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Solution

The fourth proportional to 479,639.04, 661,903.31 and 261,848.06 is: 361,351.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,639.04 : 661,903.31 = 261,848.06 : x
  2. Step 2: Convert to fraction form
    479,639.04/661,903.31 = 261,848.06/x
  3. Step 3: Cross multiply
    479,639.04x = 661,903.31 × 261,848.06
  4. Step 4: Simplify right side
    479,639.04x = 173,318,093,012.32
  5. Step 5: Solve for x
    x = 173,318,093,012.32/479,639.04
  6. Step 6: Final answer
    x = 361,351.10

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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.