Home / 455,564.10-683,540.55-218,784.90

Finding the Fourth Proportional to 455,564.10, 683,540.55 and 218,784.90

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Solution

The fourth proportional to 455,564.10, 683,540.55 and 218,784.90 is: 328,270.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,564.10 : 683,540.55 = 218,784.90 : x
  2. Step 2: Convert to fraction form
    455,564.10/683,540.55 = 218,784.90/x
  3. Step 3: Cross multiply
    455,564.10x = 683,540.55 × 218,784.90
  4. Step 4: Simplify right side
    455,564.10x = 149,548,350,877.70
  5. Step 5: Solve for x
    x = 149,548,350,877.70/455,564.10
  6. Step 6: Final answer
    x = 328,270.71

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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.