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Finding the Fourth Proportional to 325,111.70, 487,752.60 and 125,438.60

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Solution

The fourth proportional to 325,111.70, 487,752.60 and 125,438.60 is: 188,190.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,111.70 : 487,752.60 = 125,438.60 : x
  2. Step 2: Convert to fraction form
    325,111.70/487,752.60 = 125,438.60/x
  3. Step 3: Cross multiply
    325,111.70x = 487,752.60 × 125,438.60
  4. Step 4: Simplify right side
    325,111.70x = 61,183,003,290.36
  5. Step 5: Solve for x
    x = 61,183,003,290.36/325,111.70
  6. Step 6: Final answer
    x = 188,190.72

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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.