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Finding the Fourth Proportional to 285,498.80, 394,181.88 and 255,187.52

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Solution

The fourth proportional to 285,498.80, 394,181.88 and 255,187.52 is: 352,331.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,498.80 : 394,181.88 = 255,187.52 : x
  2. Step 2: Convert to fraction form
    285,498.80/394,181.88 = 255,187.52/x
  3. Step 3: Cross multiply
    285,498.80x = 394,181.88 × 255,187.52
  4. Step 4: Simplify right side
    285,498.80x = 100,590,296,386.14
  5. Step 5: Solve for x
    x = 100,590,296,386.14/285,498.80
  6. Step 6: Final answer
    x = 352,331.77

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1.5x scale

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.