Home / 209,004.48-313,614.72-103,821.12

Finding the Fourth Proportional to 209,004.48, 313,614.72 and 103,821.12

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Solution

The fourth proportional to 209,004.48, 313,614.72 and 103,821.12 is: 155,785.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,004.48 : 313,614.72 = 103,821.12 : x
  2. Step 2: Convert to fraction form
    209,004.48/313,614.72 = 103,821.12/x
  3. Step 3: Cross multiply
    209,004.48x = 313,614.72 × 103,821.12
  4. Step 4: Simplify right side
    209,004.48x = 32,559,831,478.89
  5. Step 5: Solve for x
    x = 32,559,831,478.89/209,004.48
  6. Step 6: Final answer
    x = 155,785.33

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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.