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Finding the Fourth Proportional to 307,840.56, 424,815.83 and 171,876.59

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Solution

The fourth proportional to 307,840.56, 424,815.83 and 171,876.59 is: 237,187.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,840.56 : 424,815.83 = 171,876.59 : x
  2. Step 2: Convert to fraction form
    307,840.56/424,815.83 = 171,876.59/x
  3. Step 3: Cross multiply
    307,840.56x = 424,815.83 × 171,876.59
  4. Step 4: Simplify right side
    307,840.56x = 73,015,894,114.34
  5. Step 5: Solve for x
    x = 73,015,894,114.34/307,840.56
  6. Step 6: Final answer
    x = 237,187.38

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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.