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Finding the Fourth Proportional to 281,323.64, 388,230.90 and 154,011.08

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Solution

The fourth proportional to 281,323.64, 388,230.90 and 154,011.08 is: 212,537.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,323.64 : 388,230.90 = 154,011.08 : x
  2. Step 2: Convert to fraction form
    281,323.64/388,230.90 = 154,011.08/x
  3. Step 3: Cross multiply
    281,323.64x = 388,230.90 × 154,011.08
  4. Step 4: Simplify right side
    281,323.64x = 59,791,860,198.37
  5. Step 5: Solve for x
    x = 59,791,860,198.37/281,323.64
  6. Step 6: Final answer
    x = 212,537.63

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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.