Home / 208,280.22-312,355.75-75,143.17

Finding the Fourth Proportional to 208,280.22, 312,355.75 and 75,143.17

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Solution

The fourth proportional to 208,280.22, 312,355.75 and 75,143.17 is: 112,691.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,280.22 : 312,355.75 = 75,143.17 : x
  2. Step 2: Convert to fraction form
    208,280.22/312,355.75 = 75,143.17/x
  3. Step 3: Cross multiply
    208,280.22x = 312,355.75 × 75,143.17
  4. Step 4: Simplify right side
    208,280.22x = 23,471,400,847.01
  5. Step 5: Solve for x
    x = 23,471,400,847.01/208,280.22
  6. Step 6: Final answer
    x = 112,691.46

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1.5x scale

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.