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Finding the Fourth Proportional to 281,809.08, 388,898.86 and 154,496.44

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Solution

The fourth proportional to 281,809.08, 388,898.86 and 154,496.44 is: 213,206.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,809.08 : 388,898.86 = 154,496.44 : x
  2. Step 2: Convert to fraction form
    281,809.08/388,898.86 = 154,496.44/x
  3. Step 3: Cross multiply
    281,809.08x = 388,898.86 × 154,496.44
  4. Step 4: Simplify right side
    281,809.08x = 60,083,489,390.06
  5. Step 5: Solve for x
    x = 60,083,489,390.06/281,809.08
  6. Step 6: Final answer
    x = 213,206.36

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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.