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Finding the Fourth Proportional to 208,675.20, 313,012.80 and 60,931.20

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Solution

The fourth proportional to 208,675.20, 313,012.80 and 60,931.20 is: 91,396.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,675.20 : 313,012.80 = 60,931.20 : x
  2. Step 2: Convert to fraction form
    208,675.20/313,012.80 = 60,931.20/x
  3. Step 3: Cross multiply
    208,675.20x = 313,012.80 × 60,931.20
  4. Step 4: Simplify right side
    208,675.20x = 19,072,245,519.36
  5. Step 5: Solve for x
    x = 19,072,245,519.36/208,675.20
  6. Step 6: Final answer
    x = 91,396.80

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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.