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Finding the Fourth Proportional to 218,787.51, 328,181.23 and 52,575.51

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Solution

The fourth proportional to 218,787.51, 328,181.23 and 52,575.51 is: 78,863.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,787.51 : 328,181.23 = 52,575.51 : x
  2. Step 2: Convert to fraction form
    218,787.51/328,181.23 = 52,575.51/x
  3. Step 3: Cross multiply
    218,787.51x = 328,181.23 × 52,575.51
  4. Step 4: Simplify right side
    218,787.51x = 17,254,295,539.68
  5. Step 5: Solve for x
    x = 17,254,295,539.68/218,787.51
  6. Step 6: Final answer
    x = 78,863.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.