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Finding the Fourth Proportional to 307,318.43, 424,068.44 and 171,339.59

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Solution

The fourth proportional to 307,318.43, 424,068.44 and 171,339.59 is: 236,431.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,318.43 : 424,068.44 = 171,339.59 : x
  2. Step 2: Convert to fraction form
    307,318.43/424,068.44 = 171,339.59/x
  3. Step 3: Cross multiply
    307,318.43x = 424,068.44 × 171,339.59
  4. Step 4: Simplify right side
    307,318.43x = 72,659,709,664.50
  5. Step 5: Solve for x
    x = 72,659,709,664.50/307,318.43
  6. Step 6: Final answer
    x = 236,431.35

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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.