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Finding the Fourth Proportional to 255,998.07, 383,997.09 and 69,009.57

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Solution

The fourth proportional to 255,998.07, 383,997.09 and 69,009.57 is: 103,514.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,998.07 : 383,997.09 = 69,009.57 : x
  2. Step 2: Convert to fraction form
    255,998.07/383,997.09 = 69,009.57/x
  3. Step 3: Cross multiply
    255,998.07x = 383,997.09 × 69,009.57
  4. Step 4: Simplify right side
    255,998.07x = 26,499,474,062.15
  5. Step 5: Solve for x
    x = 26,499,474,062.15/255,998.07
  6. Step 6: Final answer
    x = 103,514.35

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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.