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Finding the Fourth Proportional to 381,929.39, 527,077.52 and 261,323.63

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Solution

The fourth proportional to 381,929.39, 527,077.52 and 261,323.63 is: 360,636.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,929.39 : 527,077.52 = 261,323.63 : x
  2. Step 2: Convert to fraction form
    381,929.39/527,077.52 = 261,323.63/x
  3. Step 3: Cross multiply
    381,929.39x = 527,077.52 × 261,323.63
  4. Step 4: Simplify right side
    381,929.39x = 137,737,809,511.18
  5. Step 5: Solve for x
    x = 137,737,809,511.18/381,929.39
  6. Step 6: Final answer
    x = 360,636.84

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1.5x scale

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.