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Finding the Fourth Proportional to 252,643.86, 348,639.39 and 139,464.18

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Solution

The fourth proportional to 252,643.86, 348,639.39 and 139,464.18 is: 192,455.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,643.86 : 348,639.39 = 139,464.18 : x
  2. Step 2: Convert to fraction form
    252,643.86/348,639.39 = 139,464.18/x
  3. Step 3: Cross multiply
    252,643.86x = 348,639.39 × 139,464.18
  4. Step 4: Simplify right side
    252,643.86x = 48,622,706,642.05
  5. Step 5: Solve for x
    x = 48,622,706,642.05/252,643.86
  6. Step 6: Final answer
    x = 192,455.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.