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Finding the Fourth Proportional to 289,371.48, 399,296.64 and 162,026.52

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Solution

The fourth proportional to 289,371.48, 399,296.64 and 162,026.52 is: 223,576.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,371.48 : 399,296.64 = 162,026.52 : x
  2. Step 2: Convert to fraction form
    289,371.48/399,296.64 = 162,026.52/x
  3. Step 3: Cross multiply
    289,371.48x = 399,296.64 × 162,026.52
  4. Step 4: Simplify right side
    289,371.48x = 64,696,645,026.89
  5. Step 5: Solve for x
    x = 64,696,645,026.89/289,371.48
  6. Step 6: Final answer
    x = 223,576.44

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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.