Home / 235,650.24-325,200.78-128,220.48

Finding the Fourth Proportional to 235,650.24, 325,200.78 and 128,220.48

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Solution

The fourth proportional to 235,650.24, 325,200.78 and 128,220.48 is: 176,946.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,650.24 : 325,200.78 = 128,220.48 : x
  2. Step 2: Convert to fraction form
    235,650.24/325,200.78 = 128,220.48/x
  3. Step 3: Cross multiply
    235,650.24x = 325,200.78 × 128,220.48
  4. Step 4: Simplify right side
    235,650.24x = 41,697,400,107.97
  5. Step 5: Solve for x
    x = 41,697,400,107.97/235,650.24
  6. Step 6: Final answer
    x = 176,946.14

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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.