Home / 638,913.39-958,268.49-212,413.77

Finding the Fourth Proportional to 638,913.39, 958,268.49 and 212,413.77

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Solution

The fourth proportional to 638,913.39, 958,268.49 and 212,413.77 is: 318,586.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,913.39 : 958,268.49 = 212,413.77 : x
  2. Step 2: Convert to fraction form
    638,913.39/958,268.49 = 212,413.77/x
  3. Step 3: Cross multiply
    638,913.39x = 958,268.49 × 212,413.77
  4. Step 4: Simplify right side
    638,913.39x = 203,549,422,633.11
  5. Step 5: Solve for x
    x = 203,549,422,633.11/638,913.39
  6. Step 6: Final answer
    x = 318,586.88

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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.