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Finding the Fourth Proportional to 251,440.78, 377,080.95 and 82,929.58

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Solution

The fourth proportional to 251,440.78, 377,080.95 and 82,929.58 is: 124,367.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,440.78 : 377,080.95 = 82,929.58 : x
  2. Step 2: Convert to fraction form
    251,440.78/377,080.95 = 82,929.58/x
  3. Step 3: Cross multiply
    251,440.78x = 377,080.95 × 82,929.58
  4. Step 4: Simplify right side
    251,440.78x = 31,271,164,809.50
  5. Step 5: Solve for x
    x = 31,271,164,809.50/251,440.78
  6. Step 6: Final answer
    x = 124,367.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.