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Finding the Fourth Proportional to 205,678.98, 308,622.29 and 93,287.52

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Solution

The fourth proportional to 205,678.98, 308,622.29 and 93,287.52 is: 139,978.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,678.98 : 308,622.29 = 93,287.52 : x
  2. Step 2: Convert to fraction form
    205,678.98/308,622.29 = 93,287.52/x
  3. Step 3: Cross multiply
    205,678.98x = 308,622.29 × 93,287.52
  4. Step 4: Simplify right side
    205,678.98x = 28,790,607,584.38
  5. Step 5: Solve for x
    x = 28,790,607,584.38/205,678.98
  6. Step 6: Final answer
    x = 139,978.37

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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.