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Finding the Fourth Proportional to 221,215.34, 305,303.09 and 125,736.39

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Solution

The fourth proportional to 221,215.34, 305,303.09 and 125,736.39 is: 173,530.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,215.34 : 305,303.09 = 125,736.39 : x
  2. Step 2: Convert to fraction form
    221,215.34/305,303.09 = 125,736.39/x
  3. Step 3: Cross multiply
    221,215.34x = 305,303.09 × 125,736.39
  4. Step 4: Simplify right side
    221,215.34x = 38,387,708,392.45
  5. Step 5: Solve for x
    x = 38,387,708,392.45/221,215.34
  6. Step 6: Final answer
    x = 173,530.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.