Home / 209,983.05-314,991.08-103,424.31

Finding the Fourth Proportional to 209,983.05, 314,991.08 and 103,424.31

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Solution

The fourth proportional to 209,983.05, 314,991.08 and 103,424.31 is: 155,144.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,983.05 : 314,991.08 = 103,424.31 : x
  2. Step 2: Convert to fraction form
    209,983.05/314,991.08 = 103,424.31/x
  3. Step 3: Cross multiply
    209,983.05x = 314,991.08 × 103,424.31
  4. Step 4: Simplify right side
    209,983.05x = 32,577,734,975.87
  5. Step 5: Solve for x
    x = 32,577,734,975.87/209,983.05
  6. Step 6: Final answer
    x = 155,144.59

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1.5x scale

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.