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Finding the Fourth Proportional to 202,668.48, 279,653.91 and 115,455.87

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Solution

The fourth proportional to 202,668.48, 279,653.91 and 115,455.87 is: 159,312.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,668.48 : 279,653.91 = 115,455.87 : x
  2. Step 2: Convert to fraction form
    202,668.48/279,653.91 = 115,455.87/x
  3. Step 3: Cross multiply
    202,668.48x = 279,653.91 × 115,455.87
  4. Step 4: Simplify right side
    202,668.48x = 32,287,685,477.95
  5. Step 5: Solve for x
    x = 32,287,685,477.95/202,668.48
  6. Step 6: Final answer
    x = 159,312.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.