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Finding the Fourth Proportional to 547,277.40, 820,916.10 and 147,906.90

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Solution

The fourth proportional to 547,277.40, 820,916.10 and 147,906.90 is: 221,860.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,277.40 : 820,916.10 = 147,906.90 : x
  2. Step 2: Convert to fraction form
    547,277.40/820,916.10 = 147,906.90/x
  3. Step 3: Cross multiply
    547,277.40x = 820,916.10 × 147,906.90
  4. Step 4: Simplify right side
    547,277.40x = 121,419,155,511.09
  5. Step 5: Solve for x
    x = 121,419,155,511.09/547,277.40
  6. Step 6: Final answer
    x = 221,860.35

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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.