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Finding the Fourth Proportional to 243,918.30, 365,904.33 and 77,668.06

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Solution

The fourth proportional to 243,918.30, 365,904.33 and 77,668.06 is: 116,510.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,918.30 : 365,904.33 = 77,668.06 : x
  2. Step 2: Convert to fraction form
    243,918.30/365,904.33 = 77,668.06/x
  3. Step 3: Cross multiply
    243,918.30x = 365,904.33 × 77,668.06
  4. Step 4: Simplify right side
    243,918.30x = 28,419,079,456.70
  5. Step 5: Solve for x
    x = 28,419,079,456.70/243,918.30
  6. Step 6: Final answer
    x = 116,510.65

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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.