Home / 305,860.20-458,954.33-128,385.15

Finding the Fourth Proportional to 305,860.20, 458,954.33 and 128,385.15

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Solution

The fourth proportional to 305,860.20, 458,954.33 and 128,385.15 is: 192,646.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,860.20 : 458,954.33 = 128,385.15 : x
  2. Step 2: Convert to fraction form
    305,860.20/458,954.33 = 128,385.15/x
  3. Step 3: Cross multiply
    305,860.20x = 458,954.33 × 128,385.15
  4. Step 4: Simplify right side
    305,860.20x = 58,922,919,858.27
  5. Step 5: Solve for x
    x = 58,922,919,858.27/305,860.20
  6. Step 6: Final answer
    x = 192,646.57

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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.