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Finding the Fourth Proportional to 281,337.80, 388,246.44 and 154,013.60

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Solution

The fourth proportional to 281,337.80, 388,246.44 and 154,013.60 is: 212,538.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,337.80 : 388,246.44 = 154,013.60 : x
  2. Step 2: Convert to fraction form
    281,337.80/388,246.44 = 154,013.60/x
  3. Step 3: Cross multiply
    281,337.80x = 388,246.44 × 154,013.60
  4. Step 4: Simplify right side
    281,337.80x = 59,795,231,911.58
  5. Step 5: Solve for x
    x = 59,795,231,911.58/281,337.80
  6. Step 6: Final answer
    x = 212,538.92

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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.