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Finding the Fourth Proportional to 380,170.82, 570,382.90 and 127,476.29

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Solution

The fourth proportional to 380,170.82, 570,382.90 and 127,476.29 is: 191,256.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,170.82 : 570,382.90 = 127,476.29 : x
  2. Step 2: Convert to fraction form
    380,170.82/570,382.90 = 127,476.29/x
  3. Step 3: Cross multiply
    380,170.82x = 570,382.90 × 127,476.29
  4. Step 4: Simplify right side
    380,170.82x = 72,710,292,800.84
  5. Step 5: Solve for x
    x = 72,710,292,800.84/380,170.82
  6. Step 6: Final answer
    x = 191,256.90

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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.