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Finding the Fourth Proportional to 265,622.17, 398,550.64 and 139,232.19

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Solution

The fourth proportional to 265,622.17, 398,550.64 and 139,232.19 is: 208,909.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,622.17 : 398,550.64 = 139,232.19 : x
  2. Step 2: Convert to fraction form
    265,622.17/398,550.64 = 139,232.19/x
  3. Step 3: Cross multiply
    265,622.17x = 398,550.64 × 139,232.19
  4. Step 4: Simplify right side
    265,622.17x = 55,491,078,433.10
  5. Step 5: Solve for x
    x = 55,491,078,433.10/265,622.17
  6. Step 6: Final answer
    x = 208,909.82

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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.