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Finding the Fourth Proportional to 307,217, 423,953.38 and 171,242.84

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Solution

The fourth proportional to 307,217, 423,953.38 and 171,242.84 is: 236,311.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,217 : 423,953.38 = 171,242.84 : x
  2. Step 2: Convert to fraction form
    307,217/423,953.38 = 171,242.84/x
  3. Step 3: Cross multiply
    307,217x = 423,953.38 × 171,242.84
  4. Step 4: Simplify right side
    307,217x = 72,598,980,818.80
  5. Step 5: Solve for x
    x = 72,598,980,818.80/307,217
  6. Step 6: Final answer
    x = 236,311.73

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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.