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Finding the Fourth Proportional to 265,795.45, 398,694.60 and 66,115.83

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Solution

The fourth proportional to 265,795.45, 398,694.60 and 66,115.83 is: 99,174.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,795.45 : 398,694.60 = 66,115.83 : x
  2. Step 2: Convert to fraction form
    265,795.45/398,694.60 = 66,115.83/x
  3. Step 3: Cross multiply
    265,795.45x = 398,694.60 × 66,115.83
  4. Step 4: Simplify right side
    265,795.45x = 26,360,024,395.52
  5. Step 5: Solve for x
    x = 26,360,024,395.52/265,795.45
  6. Step 6: Final answer
    x = 99,174.10

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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.