Home / 208,239.36-312,378.24-67,998.72

Finding the Fourth Proportional to 208,239.36, 312,378.24 and 67,998.72

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Solution

The fourth proportional to 208,239.36, 312,378.24 and 67,998.72 is: 102,004.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,239.36 : 312,378.24 = 67,998.72 : x
  2. Step 2: Convert to fraction form
    208,239.36/312,378.24 = 67,998.72/x
  3. Step 3: Cross multiply
    208,239.36x = 312,378.24 × 67,998.72
  4. Step 4: Simplify right side
    208,239.36x = 21,241,320,475.85
  5. Step 5: Solve for x
    x = 21,241,320,475.85/208,239.36
  6. Step 6: Final answer
    x = 102,004.35

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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.