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Finding the Fourth Proportional to 347,239.65, 479,188.13 and 196,342.05

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Solution

The fourth proportional to 347,239.65, 479,188.13 and 196,342.05 is: 270,950.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,239.65 : 479,188.13 = 196,342.05 : x
  2. Step 2: Convert to fraction form
    347,239.65/479,188.13 = 196,342.05/x
  3. Step 3: Cross multiply
    347,239.65x = 479,188.13 × 196,342.05
  4. Step 4: Simplify right side
    347,239.65x = 94,084,778,798.16
  5. Step 5: Solve for x
    x = 94,084,778,798.16/347,239.65
  6. Step 6: Final answer
    x = 270,950.56

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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.