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Finding the Fourth Proportional to 665,480.40, 998,220.60 and 266,182.80

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Solution

The fourth proportional to 665,480.40, 998,220.60 and 266,182.80 is: 399,274.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,480.40 : 998,220.60 = 266,182.80 : x
  2. Step 2: Convert to fraction form
    665,480.40/998,220.60 = 266,182.80/x
  3. Step 3: Cross multiply
    665,480.40x = 998,220.60 × 266,182.80
  4. Step 4: Simplify right side
    665,480.40x = 265,709,154,325.68
  5. Step 5: Solve for x
    x = 265,709,154,325.68/665,480.40
  6. Step 6: Final answer
    x = 399,274.20

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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.