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Finding the Fourth Proportional to 664,866.75, 997,300.13 and 166,230.75

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Solution

The fourth proportional to 664,866.75, 997,300.13 and 166,230.75 is: 249,346.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,866.75 : 997,300.13 = 166,230.75 : x
  2. Step 2: Convert to fraction form
    664,866.75/997,300.13 = 166,230.75/x
  3. Step 3: Cross multiply
    664,866.75x = 997,300.13 × 166,230.75
  4. Step 4: Simplify right side
    664,866.75x = 165,781,947,753.84
  5. Step 5: Solve for x
    x = 165,781,947,753.84/664,866.75
  6. Step 6: Final answer
    x = 249,346.13

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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.