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Finding the Fourth Proportional to 445,291.57, 666,360.66 and 276,891.20

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Solution

The fourth proportional to 445,291.57, 666,360.66 and 276,891.20 is: 414,356.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,291.57 : 666,360.66 = 276,891.20 : x
  2. Step 2: Convert to fraction form
    445,291.57/666,360.66 = 276,891.20/x
  3. Step 3: Cross multiply
    445,291.57x = 666,360.66 × 276,891.20
  4. Step 4: Simplify right side
    445,291.57x = 184,509,401,395.74
  5. Step 5: Solve for x
    x = 184,509,401,395.74/445,291.57
  6. Step 6: Final answer
    x = 414,356.38

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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.