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Finding the Fourth Proportional to 371,490.99, 512,711.72 and 208,158.54

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Solution

The fourth proportional to 371,490.99, 512,711.72 and 208,158.54 is: 287,289.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,490.99 : 512,711.72 = 208,158.54 : x
  2. Step 2: Convert to fraction form
    371,490.99/512,711.72 = 208,158.54/x
  3. Step 3: Cross multiply
    371,490.99x = 512,711.72 × 208,158.54
  4. Step 4: Simplify right side
    371,490.99x = 106,725,324,948.12
  5. Step 5: Solve for x
    x = 106,725,324,948.12/371,490.99
  6. Step 6: Final answer
    x = 287,289.13

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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.