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Finding the Fourth Proportional to 381,124.92, 525,712.14 and 245,336.28

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Solution

The fourth proportional to 381,124.92, 525,712.14 and 245,336.28 is: 338,409.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,124.92 : 525,712.14 = 245,336.28 : x
  2. Step 2: Convert to fraction form
    381,124.92/525,712.14 = 245,336.28/x
  3. Step 3: Cross multiply
    381,124.92x = 525,712.14 × 245,336.28
  4. Step 4: Simplify right side
    381,124.92x = 128,976,260,778.44
  5. Step 5: Solve for x
    x = 128,976,260,778.44/381,124.92
  6. Step 6: Final answer
    x = 338,409.41

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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.