Home / 419,115.59-628,667.22-103,572.50

Finding the Fourth Proportional to 419,115.59, 628,667.22 and 103,572.50

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Solution

The fourth proportional to 419,115.59, 628,667.22 and 103,572.50 is: 155,357.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,115.59 : 628,667.22 = 103,572.50 : x
  2. Step 2: Convert to fraction form
    419,115.59/628,667.22 = 103,572.50/x
  3. Step 3: Cross multiply
    419,115.59x = 628,667.22 × 103,572.50
  4. Step 4: Simplify right side
    419,115.59x = 65,112,632,500.11
  5. Step 5: Solve for x
    x = 65,112,632,500.11/419,115.59
  6. Step 6: Final answer
    x = 155,357.22

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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.