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Finding the Fourth Proportional to 307,059.48, 423,729.36 and 171,086.40

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Solution

The fourth proportional to 307,059.48, 423,729.36 and 171,086.40 is: 236,092.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,059.48 : 423,729.36 = 171,086.40 : x
  2. Step 2: Convert to fraction form
    307,059.48/423,729.36 = 171,086.40/x
  3. Step 3: Cross multiply
    307,059.48x = 423,729.36 × 171,086.40
  4. Step 4: Simplify right side
    307,059.48x = 72,494,330,776.70
  5. Step 5: Solve for x
    x = 72,494,330,776.70/307,059.48
  6. Step 6: Final answer
    x = 236,092.14

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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.