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Finding the Fourth Proportional to 399,338.70, 599,172.08 and 146,740.20

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Solution

The fourth proportional to 399,338.70, 599,172.08 and 146,740.20 is: 220,170.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,338.70 : 599,172.08 = 146,740.20 : x
  2. Step 2: Convert to fraction form
    399,338.70/599,172.08 = 146,740.20/x
  3. Step 3: Cross multiply
    399,338.70x = 599,172.08 × 146,740.20
  4. Step 4: Simplify right side
    399,338.70x = 87,922,630,119.92
  5. Step 5: Solve for x
    x = 87,922,630,119.92/399,338.70
  6. Step 6: Final answer
    x = 220,170.57

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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.