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Finding the Fourth Proportional to 328,311.74, 492,482.72 and 100,591.05

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Solution

The fourth proportional to 328,311.74, 492,482.72 and 100,591.05 is: 150,891.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,311.74 : 492,482.72 = 100,591.05 : x
  2. Step 2: Convert to fraction form
    328,311.74/492,482.72 = 100,591.05/x
  3. Step 3: Cross multiply
    328,311.74x = 492,482.72 × 100,591.05
  4. Step 4: Simplify right side
    328,311.74x = 49,539,353,911.66
  5. Step 5: Solve for x
    x = 49,539,353,911.66/328,311.74
  6. Step 6: Final answer
    x = 150,891.20

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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.