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Finding the Fourth Proportional to 289,717.40, 434,576.10 and 254,696.60

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Solution

The fourth proportional to 289,717.40, 434,576.10 and 254,696.60 is: 382,044.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,717.40 : 434,576.10 = 254,696.60 : x
  2. Step 2: Convert to fraction form
    289,717.40/434,576.10 = 254,696.60/x
  3. Step 3: Cross multiply
    289,717.40x = 434,576.10 × 254,696.60
  4. Step 4: Simplify right side
    289,717.40x = 110,685,055,111.26
  5. Step 5: Solve for x
    x = 110,685,055,111.26/289,717.40
  6. Step 6: Final answer
    x = 382,044.90

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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.