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Finding the Fourth Proportional to 390,745.44, 586,119.60 and 95,257.44

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Solution

The fourth proportional to 390,745.44, 586,119.60 and 95,257.44 is: 142,886.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,745.44 : 586,119.60 = 95,257.44 : x
  2. Step 2: Convert to fraction form
    390,745.44/586,119.60 = 95,257.44/x
  3. Step 3: Cross multiply
    390,745.44x = 586,119.60 × 95,257.44
  4. Step 4: Simplify right side
    390,745.44x = 55,832,252,629.82
  5. Step 5: Solve for x
    x = 55,832,252,629.82/390,745.44
  6. Step 6: Final answer
    x = 142,886.51

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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.