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Finding the Fourth Proportional to 307,265.63, 424,028.36 and 171,308.12

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Solution

The fourth proportional to 307,265.63, 424,028.36 and 171,308.12 is: 236,406.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,265.63 : 424,028.36 = 171,308.12 : x
  2. Step 2: Convert to fraction form
    307,265.63/424,028.36 = 171,308.12/x
  3. Step 3: Cross multiply
    307,265.63x = 424,028.36 × 171,308.12
  4. Step 4: Simplify right side
    307,265.63x = 72,639,499,486.41
  5. Step 5: Solve for x
    x = 72,639,499,486.41/307,265.63
  6. Step 6: Final answer
    x = 236,406.20

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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.