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Finding the Fourth Proportional to 263,000.20, 394,500.30 and 260,235.40

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Solution

The fourth proportional to 263,000.20, 394,500.30 and 260,235.40 is: 390,353.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,000.20 : 394,500.30 = 260,235.40 : x
  2. Step 2: Convert to fraction form
    263,000.20/394,500.30 = 260,235.40/x
  3. Step 3: Cross multiply
    263,000.20x = 394,500.30 × 260,235.40
  4. Step 4: Simplify right side
    263,000.20x = 102,662,943,370.62
  5. Step 5: Solve for x
    x = 102,662,943,370.62/263,000.20
  6. Step 6: Final answer
    x = 390,353.10

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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.