Home / 209,023.28-288,409.78-127,296.75

Finding the Fourth Proportional to 209,023.28, 288,409.78 and 127,296.75

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Solution

The fourth proportional to 209,023.28, 288,409.78 and 127,296.75 is: 175,643.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,023.28 : 288,409.78 = 127,296.75 : x
  2. Step 2: Convert to fraction form
    209,023.28/288,409.78 = 127,296.75/x
  3. Step 3: Cross multiply
    209,023.28x = 288,409.78 × 127,296.75
  4. Step 4: Simplify right side
    209,023.28x = 36,713,627,662.22
  5. Step 5: Solve for x
    x = 36,713,627,662.22/209,023.28
  6. Step 6: Final answer
    x = 175,643.73

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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.