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Finding the Fourth Proportional to 405,279.35, 607,919.48 and 105,759.68

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Solution

The fourth proportional to 405,279.35, 607,919.48 and 105,759.68 is: 158,639.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,279.35 : 607,919.48 = 105,759.68 : x
  2. Step 2: Convert to fraction form
    405,279.35/607,919.48 = 105,759.68/x
  3. Step 3: Cross multiply
    405,279.35x = 607,919.48 × 105,759.68
  4. Step 4: Simplify right side
    405,279.35x = 64,293,366,498.77
  5. Step 5: Solve for x
    x = 64,293,366,498.77/405,279.35
  6. Step 6: Final answer
    x = 158,639.63

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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.