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Finding the Fourth Proportional to 465,945.60, 698,918.40 and 199,660.80

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Solution

The fourth proportional to 465,945.60, 698,918.40 and 199,660.80 is: 299,491.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,945.60 : 698,918.40 = 199,660.80 : x
  2. Step 2: Convert to fraction form
    465,945.60/698,918.40 = 199,660.80/x
  3. Step 3: Cross multiply
    465,945.60x = 698,918.40 × 199,660.80
  4. Step 4: Simplify right side
    465,945.60x = 139,546,606,878.72
  5. Step 5: Solve for x
    x = 139,546,606,878.72/465,945.60
  6. Step 6: Final answer
    x = 299,491.20

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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.