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Finding the Fourth Proportional to 208,911.04, 313,300.08 and 68,637.28

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Solution

The fourth proportional to 208,911.04, 313,300.08 and 68,637.28 is: 102,934.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,911.04 : 313,300.08 = 68,637.28 : x
  2. Step 2: Convert to fraction form
    208,911.04/313,300.08 = 68,637.28/x
  3. Step 3: Cross multiply
    208,911.04x = 313,300.08 × 68,637.28
  4. Step 4: Simplify right side
    208,911.04x = 21,504,065,314.98
  5. Step 5: Solve for x
    x = 21,504,065,314.98/208,911.04
  6. Step 6: Final answer
    x = 102,934.08

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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.