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Finding the Fourth Proportional to 255,998.43, 383,997.66 and 69,009.93

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Solution

The fourth proportional to 255,998.43, 383,997.66 and 69,009.93 is: 103,514.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,998.43 : 383,997.66 = 69,009.93 : x
  2. Step 2: Convert to fraction form
    255,998.43/383,997.66 = 69,009.93/x
  3. Step 3: Cross multiply
    255,998.43x = 383,997.66 × 69,009.93
  4. Step 4: Simplify right side
    255,998.43x = 26,499,651,636.76
  5. Step 5: Solve for x
    x = 26,499,651,636.76/255,998.43
  6. Step 6: Final answer
    x = 103,514.90

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1.5x scale

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.