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Finding the Fourth Proportional to 205,670.00, 308,578.07 and 91,807.49

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Solution

The fourth proportional to 205,670.00, 308,578.07 and 91,807.49 is: 137,743.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,670.00 : 308,578.07 = 91,807.49 : x
  2. Step 2: Convert to fraction form
    205,670.00/308,578.07 = 91,807.49/x
  3. Step 3: Cross multiply
    205,670.00x = 308,578.07 × 91,807.49
  4. Step 4: Simplify right side
    205,670.00x = 28,329,779,076.71
  5. Step 5: Solve for x
    x = 28,329,779,076.71/205,670.00
  6. Step 6: Final answer
    x = 137,743.86

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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.