Home / 398,142.20-596,522.10-257,828.60

Finding the Fourth Proportional to 398,142.20, 596,522.10 and 257,828.60

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Solution

The fourth proportional to 398,142.20, 596,522.10 and 257,828.60 is: 386,295.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,142.20 : 596,522.10 = 257,828.60 : x
  2. Step 2: Convert to fraction form
    398,142.20/596,522.10 = 257,828.60/x
  3. Step 3: Cross multiply
    398,142.20x = 596,522.10 × 257,828.60
  4. Step 4: Simplify right side
    398,142.20x = 153,800,457,912.06
  5. Step 5: Solve for x
    x = 153,800,457,912.06/398,142.20
  6. Step 6: Final answer
    x = 386,295.29

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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.