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Finding the Fourth Proportional to 285,205.94, 393,583.52 and 170,479.01

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Solution

The fourth proportional to 285,205.94, 393,583.52 and 170,479.01 is: 235,260.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,205.94 : 393,583.52 = 170,479.01 : x
  2. Step 2: Convert to fraction form
    285,205.94/393,583.52 = 170,479.01/x
  3. Step 3: Cross multiply
    285,205.94x = 393,583.52 × 170,479.01
  4. Step 4: Simplify right side
    285,205.94x = 67,097,726,021.60
  5. Step 5: Solve for x
    x = 67,097,726,021.60/285,205.94
  6. Step 6: Final answer
    x = 235,260.62

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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.