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Finding the Fourth Proportional to 455,573.10, 683,554.05 and 218,793.90

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Solution

The fourth proportional to 455,573.10, 683,554.05 and 218,793.90 is: 328,284.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,573.10 : 683,554.05 = 218,793.90 : x
  2. Step 2: Convert to fraction form
    455,573.10/683,554.05 = 218,793.90/x
  3. Step 3: Cross multiply
    455,573.10x = 683,554.05 × 218,793.90
  4. Step 4: Simplify right side
    455,573.10x = 149,557,456,460.30
  5. Step 5: Solve for x
    x = 149,557,456,460.30/455,573.10
  6. Step 6: Final answer
    x = 328,284.21

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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.