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Finding the Fourth Proportional to 331,407.68, 457,197.12 and 223,938.56

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Solution

The fourth proportional to 331,407.68, 457,197.12 and 223,938.56 is: 308,936.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,407.68 : 457,197.12 = 223,938.56 : x
  2. Step 2: Convert to fraction form
    331,407.68/457,197.12 = 223,938.56/x
  3. Step 3: Cross multiply
    331,407.68x = 457,197.12 × 223,938.56
  4. Step 4: Simplify right side
    331,407.68x = 102,384,064,688.95
  5. Step 5: Solve for x
    x = 102,384,064,688.95/331,407.68
  6. Step 6: Final answer
    x = 308,936.91

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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.