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Finding the Fourth Proportional to 251,980.91, 347,673.99 and 143,061.63

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Solution

The fourth proportional to 251,980.91, 347,673.99 and 143,061.63 is: 197,391.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,980.91 : 347,673.99 = 143,061.63 : x
  2. Step 2: Convert to fraction form
    251,980.91/347,673.99 = 143,061.63/x
  3. Step 3: Cross multiply
    251,980.91x = 347,673.99 × 143,061.63
  4. Step 4: Simplify right side
    251,980.91x = 49,738,806,145.99
  5. Step 5: Solve for x
    x = 49,738,806,145.99/251,980.91
  6. Step 6: Final answer
    x = 197,391.17

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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.