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Finding the Fourth Proportional to 445,057.07, 666,478.41 and 311,311.07

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Solution

The fourth proportional to 445,057.07, 666,478.41 and 311,311.07 is: 466,192.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,057.07 : 666,478.41 = 311,311.07 : x
  2. Step 2: Convert to fraction form
    445,057.07/666,478.41 = 311,311.07/x
  3. Step 3: Cross multiply
    445,057.07x = 666,478.41 × 311,311.07
  4. Step 4: Simplify right side
    445,057.07x = 207,482,106,949.00
  5. Step 5: Solve for x
    x = 207,482,106,949.00/445,057.07
  6. Step 6: Final answer
    x = 466,192.14

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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.