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Finding the Fourth Proportional to 253,742.40, 380,613.60 and 127,333.80

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Solution

The fourth proportional to 253,742.40, 380,613.60 and 127,333.80 is: 191,000.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,742.40 : 380,613.60 = 127,333.80 : x
  2. Step 2: Convert to fraction form
    253,742.40/380,613.60 = 127,333.80/x
  3. Step 3: Cross multiply
    253,742.40x = 380,613.60 × 127,333.80
  4. Step 4: Simplify right side
    253,742.40x = 48,464,976,019.68
  5. Step 5: Solve for x
    x = 48,464,976,019.68/253,742.40
  6. Step 6: Final answer
    x = 191,000.70

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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.