Home / 221,918.28-306,230.64-126,406.32

Finding the Fourth Proportional to 221,918.28, 306,230.64 and 126,406.32

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Solution

The fourth proportional to 221,918.28, 306,230.64 and 126,406.32 is: 174,431.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,918.28 : 306,230.64 = 126,406.32 : x
  2. Step 2: Convert to fraction form
    221,918.28/306,230.64 = 126,406.32/x
  3. Step 3: Cross multiply
    221,918.28x = 306,230.64 × 126,406.32
  4. Step 4: Simplify right side
    221,918.28x = 38,709,488,273.64
  5. Step 5: Solve for x
    x = 38,709,488,273.64/221,918.28
  6. Step 6: Final answer
    x = 174,431.27

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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.