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Finding the Fourth Proportional to 665,464.40, 998,196.60 and 266,166.80

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Solution

The fourth proportional to 665,464.40, 998,196.60 and 266,166.80 is: 399,250.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,464.40 : 998,196.60 = 266,166.80 : x
  2. Step 2: Convert to fraction form
    665,464.40/998,196.60 = 266,166.80/x
  3. Step 3: Cross multiply
    665,464.40x = 998,196.60 × 266,166.80
  4. Step 4: Simplify right side
    665,464.40x = 265,686,794,792.88
  5. Step 5: Solve for x
    x = 265,686,794,792.88/665,464.40
  6. Step 6: Final answer
    x = 399,250.20

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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.