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Finding the Fourth Proportional to 281,230.80, 388,099.08 and 153,907.44

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Solution

The fourth proportional to 281,230.80, 388,099.08 and 153,907.44 is: 212,392.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,230.80 : 388,099.08 = 153,907.44 : x
  2. Step 2: Convert to fraction form
    281,230.80/388,099.08 = 153,907.44/x
  3. Step 3: Cross multiply
    281,230.80x = 388,099.08 × 153,907.44
  4. Step 4: Simplify right side
    281,230.80x = 59,731,335,869.16
  5. Step 5: Solve for x
    x = 59,731,335,869.16/281,230.80
  6. Step 6: Final answer
    x = 212,392.58

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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.