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Finding the Fourth Proportional to 547,240.20, 820,860.30 and 147,942.60

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Solution

The fourth proportional to 547,240.20, 820,860.30 and 147,942.60 is: 221,913.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,240.20 : 820,860.30 = 147,942.60 : x
  2. Step 2: Convert to fraction form
    547,240.20/820,860.30 = 147,942.60/x
  3. Step 3: Cross multiply
    547,240.20x = 820,860.30 × 147,942.60
  4. Step 4: Simplify right side
    547,240.20x = 121,440,207,018.78
  5. Step 5: Solve for x
    x = 121,440,207,018.78/547,240.20
  6. Step 6: Final answer
    x = 221,913.90

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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.