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Finding the Fourth Proportional to 369,836.28, 509,621.22 and 255,150

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Solution

The fourth proportional to 369,836.28, 509,621.22 and 255,150 is: 351,587.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,836.28 : 509,621.22 = 255,150 : x
  2. Step 2: Convert to fraction form
    369,836.28/509,621.22 = 255,150/x
  3. Step 3: Cross multiply
    369,836.28x = 509,621.22 × 255,150
  4. Step 4: Simplify right side
    369,836.28x = 130,029,854,283
  5. Step 5: Solve for x
    x = 130,029,854,283/369,836.28
  6. Step 6: Final answer
    x = 351,587.61

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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.