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Finding the Fourth Proportional to 208,940.89, 288,363.93 and 122,895.77

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Solution

The fourth proportional to 208,940.89, 288,363.93 and 122,895.77 is: 169,611.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,940.89 : 288,363.93 = 122,895.77 : x
  2. Step 2: Convert to fraction form
    208,940.89/288,363.93 = 122,895.77/x
  3. Step 3: Cross multiply
    208,940.89x = 288,363.93 × 122,895.77
  4. Step 4: Simplify right side
    208,940.89x = 35,438,707,217.58
  5. Step 5: Solve for x
    x = 35,438,707,217.58/208,940.89
  6. Step 6: Final answer
    x = 169,611.16

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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.