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Finding the Fourth Proportional to 385,475.84, 532,111.20 and 254,634.56

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Solution

The fourth proportional to 385,475.84, 532,111.20 and 254,634.56 is: 351,497.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,475.84 : 532,111.20 = 254,634.56 : x
  2. Step 2: Convert to fraction form
    385,475.84/532,111.20 = 254,634.56/x
  3. Step 3: Cross multiply
    385,475.84x = 532,111.20 × 254,634.56
  4. Step 4: Simplify right side
    385,475.84x = 135,493,901,283.07
  5. Step 5: Solve for x
    x = 135,493,901,283.07/385,475.84
  6. Step 6: Final answer
    x = 351,497.78

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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.