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Finding the Fourth Proportional to 297,051.20, 445,576.80 and 271,390.40

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Solution

The fourth proportional to 297,051.20, 445,576.80 and 271,390.40 is: 407,085.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,051.20 : 445,576.80 = 271,390.40 : x
  2. Step 2: Convert to fraction form
    297,051.20/445,576.80 = 271,390.40/x
  3. Step 3: Cross multiply
    297,051.20x = 445,576.80 × 271,390.40
  4. Step 4: Simplify right side
    297,051.20x = 120,925,265,982.72
  5. Step 5: Solve for x
    x = 120,925,265,982.72/297,051.20
  6. Step 6: Final answer
    x = 407,085.60

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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.