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Finding the Fourth Proportional to 208,990.48, 288,495.12 and 141,099.42

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Solution

The fourth proportional to 208,990.48, 288,495.12 and 141,099.42 is: 194,776.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,990.48 : 288,495.12 = 141,099.42 : x
  2. Step 2: Convert to fraction form
    208,990.48/288,495.12 = 141,099.42/x
  3. Step 3: Cross multiply
    208,990.48x = 288,495.12 × 141,099.42
  4. Step 4: Simplify right side
    208,990.48x = 40,706,494,104.83
  5. Step 5: Solve for x
    x = 40,706,494,104.83/208,990.48
  6. Step 6: Final answer
    x = 194,776.79

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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.