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Finding the Fourth Proportional to 380,257.52, 570,368.97 and 127,518.56

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Solution

The fourth proportional to 380,257.52, 570,368.97 and 127,518.56 is: 191,272.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,257.52 : 570,368.97 = 127,518.56 : x
  2. Step 2: Convert to fraction form
    380,257.52/570,368.97 = 127,518.56/x
  3. Step 3: Cross multiply
    380,257.52x = 570,368.97 × 127,518.56
  4. Step 4: Simplify right side
    380,257.52x = 72,732,629,723.08
  5. Step 5: Solve for x
    x = 72,732,629,723.08/380,257.52
  6. Step 6: Final answer
    x = 191,272.04

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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.