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Finding the Fourth Proportional to 547,640.40, 821,314.80 and 168,560.40

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Solution

The fourth proportional to 547,640.40, 821,314.80 and 168,560.40 is: 252,795.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,640.40 : 821,314.80 = 168,560.40 : x
  2. Step 2: Convert to fraction form
    547,640.40/821,314.80 = 168,560.40/x
  3. Step 3: Cross multiply
    547,640.40x = 821,314.80 × 168,560.40
  4. Step 4: Simplify right side
    547,640.40x = 138,441,151,213.92
  5. Step 5: Solve for x
    x = 138,441,151,213.92/547,640.40
  6. Step 6: Final answer
    x = 252,795.72

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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.