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Finding the Fourth Proportional to 255,096.30, 382,650.75 and 121,990.62

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Solution

The fourth proportional to 255,096.30, 382,650.75 and 121,990.62 is: 182,988.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,096.30 : 382,650.75 = 121,990.62 : x
  2. Step 2: Convert to fraction form
    255,096.30/382,650.75 = 121,990.62/x
  3. Step 3: Cross multiply
    255,096.30x = 382,650.75 × 121,990.62
  4. Step 4: Simplify right side
    255,096.30x = 46,679,802,235.97
  5. Step 5: Solve for x
    x = 46,679,802,235.97/255,096.30
  6. Step 6: Final answer
    x = 182,988.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.