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Finding the Fourth Proportional to 253,710.90, 380,751.03 and 204,386.76

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Solution

The fourth proportional to 253,710.90, 380,751.03 and 204,386.76 is: 306,728.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,710.90 : 380,751.03 = 204,386.76 : x
  2. Step 2: Convert to fraction form
    253,710.90/380,751.03 = 204,386.76/x
  3. Step 3: Cross multiply
    253,710.90x = 380,751.03 × 204,386.76
  4. Step 4: Simplify right side
    253,710.90x = 77,820,469,388.36
  5. Step 5: Solve for x
    x = 77,820,469,388.36/253,710.90
  6. Step 6: Final answer
    x = 306,728.92

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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.