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Finding the Fourth Proportional to 348,861.60, 521,996.40 and 255,549.60

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Solution

The fourth proportional to 348,861.60, 521,996.40 and 255,549.60 is: 382,375.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,861.60 : 521,996.40 = 255,549.60 : x
  2. Step 2: Convert to fraction form
    348,861.60/521,996.40 = 255,549.60/x
  3. Step 3: Cross multiply
    348,861.60x = 521,996.40 × 255,549.60
  4. Step 4: Simplify right side
    348,861.60x = 133,395,971,221.44
  5. Step 5: Solve for x
    x = 133,395,971,221.44/348,861.60
  6. Step 6: Final answer
    x = 382,375.05

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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.