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Finding the Fourth Proportional to 307,451.60, 424,283.78 and 171,494.34

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Solution

The fourth proportional to 307,451.60, 424,283.78 and 171,494.34 is: 236,662.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,451.60 : 424,283.78 = 171,494.34 : x
  2. Step 2: Convert to fraction form
    307,451.60/424,283.78 = 171,494.34/x
  3. Step 3: Cross multiply
    307,451.60x = 424,283.78 × 171,494.34
  4. Step 4: Simplify right side
    307,451.60x = 72,762,265,966.33
  5. Step 5: Solve for x
    x = 72,762,265,966.33/307,451.60
  6. Step 6: Final answer
    x = 236,662.51

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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.