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Finding the Fourth Proportional to 307,914.75, 424,897.86 and 171,940.58

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Solution

The fourth proportional to 307,914.75, 424,897.86 and 171,940.58 is: 237,264.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,914.75 : 424,897.86 = 171,940.58 : x
  2. Step 2: Convert to fraction form
    307,914.75/424,897.86 = 171,940.58/x
  3. Step 3: Cross multiply
    307,914.75x = 424,897.86 × 171,940.58
  4. Step 4: Simplify right side
    307,914.75x = 73,057,185,551.40
  5. Step 5: Solve for x
    x = 73,057,185,551.40/307,914.75
  6. Step 6: Final answer
    x = 237,264.33

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1.5x scale

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.