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Finding the Fourth Proportional to 281,074.80, 420,737.40 and 162,393.60

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Solution

The fourth proportional to 281,074.80, 420,737.40 and 162,393.60 is: 243,084.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,074.80 : 420,737.40 = 162,393.60 : x
  2. Step 2: Convert to fraction form
    281,074.80/420,737.40 = 162,393.60/x
  3. Step 3: Cross multiply
    281,074.80x = 420,737.40 × 162,393.60
  4. Step 4: Simplify right side
    281,074.80x = 68,325,061,040.64
  5. Step 5: Solve for x
    x = 68,325,061,040.64/281,074.80
  6. Step 6: Final answer
    x = 243,084.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.