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Finding the Fourth Proportional to 265,786.40, 398,698.80 and 88,416.80

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Solution

The fourth proportional to 265,786.40, 398,698.80 and 88,416.80 is: 132,631.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,786.40 : 398,698.80 = 88,416.80 : x
  2. Step 2: Convert to fraction form
    265,786.40/398,698.80 = 88,416.80/x
  3. Step 3: Cross multiply
    265,786.40x = 398,698.80 × 88,416.80
  4. Step 4: Simplify right side
    265,786.40x = 35,251,672,059.84
  5. Step 5: Solve for x
    x = 35,251,672,059.84/265,786.40
  6. Step 6: Final answer
    x = 132,631.59

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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.