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Finding the Fourth Proportional to 305,887.55, 422,127.71 and 168,069.37

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Solution

The fourth proportional to 305,887.55, 422,127.71 and 168,069.37 is: 231,937.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,887.55 : 422,127.71 = 168,069.37 : x
  2. Step 2: Convert to fraction form
    305,887.55/422,127.71 = 168,069.37/x
  3. Step 3: Cross multiply
    305,887.55x = 422,127.71 × 168,069.37
  4. Step 4: Simplify right side
    305,887.55x = 70,946,739,228.91
  5. Step 5: Solve for x
    x = 70,946,739,228.91/305,887.55
  6. Step 6: Final answer
    x = 231,937.32

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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.