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Finding the Fourth Proportional to 547,281.40, 820,922.10 and 147,910.90

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Solution

The fourth proportional to 547,281.40, 820,922.10 and 147,910.90 is: 221,866.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,281.40 : 820,922.10 = 147,910.90 : x
  2. Step 2: Convert to fraction form
    547,281.40/820,922.10 = 147,910.90/x
  3. Step 3: Cross multiply
    547,281.40x = 820,922.10 × 147,910.90
  4. Step 4: Simplify right side
    547,281.40x = 121,423,326,640.89
  5. Step 5: Solve for x
    x = 121,423,326,640.89/547,281.40
  6. Step 6: Final answer
    x = 221,866.35

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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.