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Finding the Fourth Proportional to 221,058.77, 305,044.70 and 125,547

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Solution

The fourth proportional to 221,058.77, 305,044.70 and 125,547 is: 173,245.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,058.77 : 305,044.70 = 125,547 : x
  2. Step 2: Convert to fraction form
    221,058.77/305,044.70 = 125,547/x
  3. Step 3: Cross multiply
    221,058.77x = 305,044.70 × 125,547
  4. Step 4: Simplify right side
    221,058.77x = 38,297,446,323.17
  5. Step 5: Solve for x
    x = 38,297,446,323.17/221,058.77
  6. Step 6: Final answer
    x = 173,245.55

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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.