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Finding the Fourth Proportional to 208,109.80, 312,215.10 and 60,365.80

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Solution

The fourth proportional to 208,109.80, 312,215.10 and 60,365.80 is: 90,563.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,109.80 : 312,215.10 = 60,365.80 : x
  2. Step 2: Convert to fraction form
    208,109.80/312,215.10 = 60,365.80/x
  3. Step 3: Cross multiply
    208,109.80x = 312,215.10 × 60,365.80
  4. Step 4: Simplify right side
    208,109.80x = 18,847,114,283.58
  5. Step 5: Solve for x
    x = 18,847,114,283.58/208,109.80
  6. Step 6: Final answer
    x = 90,563.32

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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.