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Finding the Fourth Proportional to 445,140.28, 666,223.22 and 264,639.88

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Solution

The fourth proportional to 445,140.28, 666,223.22 and 264,639.88 is: 396,075.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,140.28 : 666,223.22 = 264,639.88 : x
  2. Step 2: Convert to fraction form
    445,140.28/666,223.22 = 264,639.88/x
  3. Step 3: Cross multiply
    445,140.28x = 666,223.22 × 264,639.88
  4. Step 4: Simplify right side
    445,140.28x = 176,309,232,994.01
  5. Step 5: Solve for x
    x = 176,309,232,994.01/445,140.28
  6. Step 6: Final answer
    x = 396,075.67

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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.