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Finding the Fourth Proportional to 253,969.60, 350,459.12 and 139,229.84

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Solution

The fourth proportional to 253,969.60, 350,459.12 and 139,229.84 is: 192,126.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,969.60 : 350,459.12 = 139,229.84 : x
  2. Step 2: Convert to fraction form
    253,969.60/350,459.12 = 139,229.84/x
  3. Step 3: Cross multiply
    253,969.60x = 350,459.12 × 139,229.84
  4. Step 4: Simplify right side
    253,969.60x = 48,794,367,204.14
  5. Step 5: Solve for x
    x = 48,794,367,204.14/253,969.60
  6. Step 6: Final answer
    x = 192,126.80

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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.