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Finding the Fourth Proportional to 265,087.20, 397,630.80 and 115,399.20

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Solution

The fourth proportional to 265,087.20, 397,630.80 and 115,399.20 is: 173,098.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,087.20 : 397,630.80 = 115,399.20 : x
  2. Step 2: Convert to fraction form
    265,087.20/397,630.80 = 115,399.20/x
  3. Step 3: Cross multiply
    265,087.20x = 397,630.80 × 115,399.20
  4. Step 4: Simplify right side
    265,087.20x = 45,886,276,215.36
  5. Step 5: Solve for x
    x = 45,886,276,215.36/265,087.20
  6. Step 6: Final answer
    x = 173,098.80

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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.