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Finding the Fourth Proportional to 380,168.28, 570,378.96 and 127,473.66

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Solution

The fourth proportional to 380,168.28, 570,378.96 and 127,473.66 is: 191,252.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,168.28 : 570,378.96 = 127,473.66 : x
  2. Step 2: Convert to fraction form
    380,168.28/570,378.96 = 127,473.66/x
  3. Step 3: Cross multiply
    380,168.28x = 570,378.96 × 127,473.66
  4. Step 4: Simplify right side
    380,168.28x = 72,708,293,618.19
  5. Step 5: Solve for x
    x = 72,708,293,618.19/380,168.28
  6. Step 6: Final answer
    x = 191,252.92

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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.