Home / 269,209.35-403,812.20-128,541.51

Finding the Fourth Proportional to 269,209.35, 403,812.20 and 128,541.51

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Solution

The fourth proportional to 269,209.35, 403,812.20 and 128,541.51 is: 192,811.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,209.35 : 403,812.20 = 128,541.51 : x
  2. Step 2: Convert to fraction form
    269,209.35/403,812.20 = 128,541.51/x
  3. Step 3: Cross multiply
    269,209.35x = 403,812.20 × 128,541.51
  4. Step 4: Simplify right side
    269,209.35x = 51,906,630,265.78
  5. Step 5: Solve for x
    x = 51,906,630,265.78/269,209.35
  6. Step 6: Final answer
    x = 192,811.39

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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.