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Finding the Fourth Proportional to 377,894.92, 521,471.06 and 208,129.04

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Solution

The fourth proportional to 377,894.92, 521,471.06 and 208,129.04 is: 287,204.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,894.92 : 521,471.06 = 208,129.04 : x
  2. Step 2: Convert to fraction form
    377,894.92/521,471.06 = 208,129.04/x
  3. Step 3: Cross multiply
    377,894.92x = 521,471.06 × 208,129.04
  4. Step 4: Simplify right side
    377,894.92x = 108,533,271,105.58
  5. Step 5: Solve for x
    x = 108,533,271,105.58/377,894.92
  6. Step 6: Final answer
    x = 287,204.90

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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.