Home / 315,028.40-472,546.20-78,371.60

Finding the Fourth Proportional to 315,028.40, 472,546.20 and 78,371.60

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Solution

The fourth proportional to 315,028.40, 472,546.20 and 78,371.60 is: 117,558.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,028.40 : 472,546.20 = 78,371.60 : x
  2. Step 2: Convert to fraction form
    315,028.40/472,546.20 = 78,371.60/x
  3. Step 3: Cross multiply
    315,028.40x = 472,546.20 × 78,371.60
  4. Step 4: Simplify right side
    315,028.40x = 37,034,201,767.92
  5. Step 5: Solve for x
    x = 37,034,201,767.92/315,028.40
  6. Step 6: Final answer
    x = 117,558.30

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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.