Home / 262,057.20-392,826.60-128,828.40

Finding the Fourth Proportional to 262,057.20, 392,826.60 and 128,828.40

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Solution

The fourth proportional to 262,057.20, 392,826.60 and 128,828.40 is: 193,115.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,057.20 : 392,826.60 = 128,828.40 : x
  2. Step 2: Convert to fraction form
    262,057.20/392,826.60 = 128,828.40/x
  3. Step 3: Cross multiply
    262,057.20x = 392,826.60 × 128,828.40
  4. Step 4: Simplify right side
    262,057.20x = 50,607,222,355.44
  5. Step 5: Solve for x
    x = 50,607,222,355.44/262,057.20
  6. Step 6: Final answer
    x = 193,115.18

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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.