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Finding the Fourth Proportional to 307,094, 423,790.44 and 172,958

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Solution

The fourth proportional to 307,094, 423,790.44 and 172,958 is: 238,682.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,094 : 423,790.44 = 172,958 : x
  2. Step 2: Convert to fraction form
    307,094/423,790.44 = 172,958/x
  3. Step 3: Cross multiply
    307,094x = 423,790.44 × 172,958
  4. Step 4: Simplify right side
    307,094x = 73,297,946,921.52
  5. Step 5: Solve for x
    x = 73,297,946,921.52/307,094
  6. Step 6: Final answer
    x = 238,682.45

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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.