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Finding the Fourth Proportional to 664,139.13, 996,208.69 and 220,907.13

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Solution

The fourth proportional to 664,139.13, 996,208.69 and 220,907.13 is: 331,360.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,139.13 : 996,208.69 = 220,907.13 : x
  2. Step 2: Convert to fraction form
    664,139.13/996,208.69 = 220,907.13/x
  3. Step 3: Cross multiply
    664,139.13x = 996,208.69 × 220,907.13
  4. Step 4: Simplify right side
    664,139.13x = 220,069,602,588.96
  5. Step 5: Solve for x
    x = 220,069,602,588.96/664,139.13
  6. Step 6: Final answer
    x = 331,360.69

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Double scale
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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.