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Finding the Fourth Proportional to 348,706.84, 481,031.40 and 287,922.82

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Solution

The fourth proportional to 348,706.84, 481,031.40 and 287,922.82 is: 397,181.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,706.84 : 481,031.40 = 287,922.82 : x
  2. Step 2: Convert to fraction form
    348,706.84/481,031.40 = 287,922.82/x
  3. Step 3: Cross multiply
    348,706.84x = 481,031.40 × 287,922.82
  4. Step 4: Simplify right side
    348,706.84x = 138,499,917,196.55
  5. Step 5: Solve for x
    x = 138,499,917,196.55/348,706.84
  6. Step 6: Final answer
    x = 397,181.53

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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.