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Finding the Fourth Proportional to 208,895.20, 313,342.80 and 61,151.20

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Solution

The fourth proportional to 208,895.20, 313,342.80 and 61,151.20 is: 91,726.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,895.20 : 313,342.80 = 61,151.20 : x
  2. Step 2: Convert to fraction form
    208,895.20/313,342.80 = 61,151.20/x
  3. Step 3: Cross multiply
    208,895.20x = 313,342.80 × 61,151.20
  4. Step 4: Simplify right side
    208,895.20x = 19,161,288,231.36
  5. Step 5: Solve for x
    x = 19,161,288,231.36/208,895.20
  6. Step 6: Final answer
    x = 91,726.80

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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.