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Finding the Fourth Proportional to 446,808.15, 670,212.57 and 126,918.74

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Solution

The fourth proportional to 446,808.15, 670,212.57 and 126,918.74 is: 190,378.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,808.15 : 670,212.57 = 126,918.74 : x
  2. Step 2: Convert to fraction form
    446,808.15/670,212.57 = 126,918.74/x
  3. Step 3: Cross multiply
    446,808.15x = 670,212.57 × 126,918.74
  4. Step 4: Simplify right side
    446,808.15x = 85,062,534,916.56
  5. Step 5: Solve for x
    x = 85,062,534,916.56/446,808.15
  6. Step 6: Final answer
    x = 190,378.21

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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.