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Finding the Fourth Proportional to 351,459.16, 485,011.44 and 190,310.80

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Solution

The fourth proportional to 351,459.16, 485,011.44 and 190,310.80 is: 262,627.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,459.16 : 485,011.44 = 190,310.80 : x
  2. Step 2: Convert to fraction form
    351,459.16/485,011.44 = 190,310.80/x
  3. Step 3: Cross multiply
    351,459.16x = 485,011.44 × 190,310.80
  4. Step 4: Simplify right side
    351,459.16x = 92,302,915,155.55
  5. Step 5: Solve for x
    x = 92,302,915,155.55/351,459.16
  6. Step 6: Final answer
    x = 262,627.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.