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Finding the Fourth Proportional to 561,258.81, 842,220.36 and 206,521.92

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Solution

The fourth proportional to 561,258.81, 842,220.36 and 206,521.92 is: 309,905.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,258.81 : 842,220.36 = 206,521.92 : x
  2. Step 2: Convert to fraction form
    561,258.81/842,220.36 = 206,521.92/x
  3. Step 3: Cross multiply
    561,258.81x = 842,220.36 × 206,521.92
  4. Step 4: Simplify right side
    561,258.81x = 173,936,965,810.29
  5. Step 5: Solve for x
    x = 173,936,965,810.29/561,258.81
  6. Step 6: Final answer
    x = 309,905.10

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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.