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Finding the Fourth Proportional to 670,907.70, 1,006,069.95 and 221,454.90

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Solution

The fourth proportional to 670,907.70, 1,006,069.95 and 221,454.90 is: 332,086.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,907.70 : 1,006,069.95 = 221,454.90 : x
  2. Step 2: Convert to fraction form
    670,907.70/1,006,069.95 = 221,454.90/x
  3. Step 3: Cross multiply
    670,907.70x = 1,006,069.95 × 221,454.90
  4. Step 4: Simplify right side
    670,907.70x = 222,799,120,170.26
  5. Step 5: Solve for x
    x = 222,799,120,170.26/670,907.70
  6. Step 6: Final answer
    x = 332,086.10

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Double scale
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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.