Home / 638,913.52-958,268.68-212,413.90

Finding the Fourth Proportional to 638,913.52, 958,268.68 and 212,413.90

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Solution

The fourth proportional to 638,913.52, 958,268.68 and 212,413.90 is: 318,587.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,913.52 : 958,268.68 = 212,413.90 : x
  2. Step 2: Convert to fraction form
    638,913.52/958,268.68 = 212,413.90/x
  3. Step 3: Cross multiply
    638,913.52x = 958,268.68 × 212,413.90
  4. Step 4: Simplify right side
    638,913.52x = 203,549,582,244.27
  5. Step 5: Solve for x
    x = 203,549,582,244.27/638,913.52
  6. Step 6: Final answer
    x = 318,587.07

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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.