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Finding the Fourth Proportional to 205,577.74, 308,401.77 and 70,635.34

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Solution

The fourth proportional to 205,577.74, 308,401.77 and 70,635.34 is: 105,965.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,577.74 : 308,401.77 = 70,635.34 : x
  2. Step 2: Convert to fraction form
    205,577.74/308,401.77 = 70,635.34/x
  3. Step 3: Cross multiply
    205,577.74x = 308,401.77 × 70,635.34
  4. Step 4: Simplify right side
    205,577.74x = 21,784,063,880.55
  5. Step 5: Solve for x
    x = 21,784,063,880.55/205,577.74
  6. Step 6: Final answer
    x = 105,965.09

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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.