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Finding the Fourth Proportional to 260,897.80, 391,346.70 and 149,998.60

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Solution

The fourth proportional to 260,897.80, 391,346.70 and 149,998.60 is: 224,997.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,897.80 : 391,346.70 = 149,998.60 : x
  2. Step 2: Convert to fraction form
    260,897.80/391,346.70 = 149,998.60/x
  3. Step 3: Cross multiply
    260,897.80x = 391,346.70 × 149,998.60
  4. Step 4: Simplify right side
    260,897.80x = 58,701,457,114.62
  5. Step 5: Solve for x
    x = 58,701,457,114.62/260,897.80
  6. Step 6: Final answer
    x = 224,997.90

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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.