Home / 309,465.36-427,105.44-223,702.56

Finding the Fourth Proportional to 309,465.36, 427,105.44 and 223,702.56

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Solution

The fourth proportional to 309,465.36, 427,105.44 and 223,702.56 is: 308,740.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,465.36 : 427,105.44 = 223,702.56 : x
  2. Step 2: Convert to fraction form
    309,465.36/427,105.44 = 223,702.56/x
  3. Step 3: Cross multiply
    309,465.36x = 427,105.44 × 223,702.56
  4. Step 4: Simplify right side
    309,465.36x = 95,544,580,317.93
  5. Step 5: Solve for x
    x = 95,544,580,317.93/309,465.36
  6. Step 6: Final answer
    x = 308,740.79

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1.5x scale

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.