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Finding the Fourth Proportional to 265,622.67, 398,551.40 and 139,232.70

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Solution

The fourth proportional to 265,622.67, 398,551.40 and 139,232.70 is: 208,910.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,622.67 : 398,551.40 = 139,232.70 : x
  2. Step 2: Convert to fraction form
    265,622.67/398,551.40 = 139,232.70/x
  3. Step 3: Cross multiply
    265,622.67x = 398,551.40 × 139,232.70
  4. Step 4: Simplify right side
    265,622.67x = 55,491,386,814.62
  5. Step 5: Solve for x
    x = 55,491,386,814.62/265,622.67
  6. Step 6: Final answer
    x = 208,910.58

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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.