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Finding the Fourth Proportional to 205,520, 308,309.36 and 63,377.28

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Solution

The fourth proportional to 205,520, 308,309.36 and 63,377.28 is: 95,074.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,520 : 308,309.36 = 63,377.28 : x
  2. Step 2: Convert to fraction form
    205,520/308,309.36 = 63,377.28/x
  3. Step 3: Cross multiply
    205,520x = 308,309.36 × 63,377.28
  4. Step 4: Simplify right side
    205,520x = 19,539,808,635.34
  5. Step 5: Solve for x
    x = 19,539,808,635.34/205,520
  6. Step 6: Final answer
    x = 95,074.97

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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.