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Finding the Fourth Proportional to 307,811.39, 424,786.87 and 193,094.87

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Solution

The fourth proportional to 307,811.39, 424,786.87 and 193,094.87 is: 266,475.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,811.39 : 424,786.87 = 193,094.87 : x
  2. Step 2: Convert to fraction form
    307,811.39/424,786.87 = 193,094.87/x
  3. Step 3: Cross multiply
    307,811.39x = 424,786.87 × 193,094.87
  4. Step 4: Simplify right side
    307,811.39x = 82,024,162,833.69
  5. Step 5: Solve for x
    x = 82,024,162,833.69/307,811.39
  6. Step 6: Final answer
    x = 266,475.40

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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.