Home / 547,518.78-821,135.58-231,813.18

Finding the Fourth Proportional to 547,518.78, 821,135.58 and 231,813.18

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Solution

The fourth proportional to 547,518.78, 821,135.58 and 231,813.18 is: 347,659.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,518.78 : 821,135.58 = 231,813.18 : x
  2. Step 2: Convert to fraction form
    547,518.78/821,135.58 = 231,813.18/x
  3. Step 3: Cross multiply
    547,518.78x = 821,135.58 × 231,813.18
  4. Step 4: Simplify right side
    547,518.78x = 190,350,050,010.94
  5. Step 5: Solve for x
    x = 190,350,050,010.94/547,518.78
  6. Step 6: Final answer
    x = 347,659.40

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Similar ratio
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1.5x scale

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.