Home / 307,137.28-423,928.64-199,975.04

Finding the Fourth Proportional to 307,137.28, 423,928.64 and 199,975.04

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Solution

The fourth proportional to 307,137.28, 423,928.64 and 199,975.04 is: 276,017.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,137.28 : 423,928.64 = 199,975.04 : x
  2. Step 2: Convert to fraction form
    307,137.28/423,928.64 = 199,975.04/x
  3. Step 3: Cross multiply
    307,137.28x = 423,928.64 × 199,975.04
  4. Step 4: Simplify right side
    307,137.28x = 84,775,146,741.15
  5. Step 5: Solve for x
    x = 84,775,146,741.15/307,137.28
  6. Step 6: Final answer
    x = 276,017.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.