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Finding the Fourth Proportional to 220,873, 304,785.54 and 125,383.72

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Solution

The fourth proportional to 220,873, 304,785.54 and 125,383.72 is: 173,018.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,873 : 304,785.54 = 125,383.72 : x
  2. Step 2: Convert to fraction form
    220,873/304,785.54 = 125,383.72/x
  3. Step 3: Cross multiply
    220,873x = 304,785.54 × 125,383.72
  4. Step 4: Simplify right side
    220,873x = 38,215,144,807.41
  5. Step 5: Solve for x
    x = 38,215,144,807.41/220,873
  6. Step 6: Final answer
    x = 173,018.63

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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.