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Finding the Fourth Proportional to 307,374, 424,189.08 and 173,238

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Solution

The fourth proportional to 307,374, 424,189.08 and 173,238 is: 239,075.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,374 : 424,189.08 = 173,238 : x
  2. Step 2: Convert to fraction form
    307,374/424,189.08 = 173,238/x
  3. Step 3: Cross multiply
    307,374x = 424,189.08 × 173,238
  4. Step 4: Simplify right side
    307,374x = 73,485,667,841.04
  5. Step 5: Solve for x
    x = 73,485,667,841.04/307,374
  6. Step 6: Final answer
    x = 239,075.74

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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.