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Finding the Fourth Proportional to 307,143.60, 423,851.67 and 171,189.96

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Solution

The fourth proportional to 307,143.60, 423,851.67 and 171,189.96 is: 236,238.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,143.60 : 423,851.67 = 171,189.96 : x
  2. Step 2: Convert to fraction form
    307,143.60/423,851.67 = 171,189.96/x
  3. Step 3: Cross multiply
    307,143.60x = 423,851.67 × 171,189.96
  4. Step 4: Simplify right side
    307,143.60x = 72,559,150,433.23
  5. Step 5: Solve for x
    x = 72,559,150,433.23/307,143.60
  6. Step 6: Final answer
    x = 236,238.52

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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.