Home / 411,258.40-616,887.60-111,785.20

Finding the Fourth Proportional to 411,258.40, 616,887.60 and 111,785.20

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Solution

The fourth proportional to 411,258.40, 616,887.60 and 111,785.20 is: 167,677.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,258.40 : 616,887.60 = 111,785.20 : x
  2. Step 2: Convert to fraction form
    411,258.40/616,887.60 = 111,785.20/x
  3. Step 3: Cross multiply
    411,258.40x = 616,887.60 × 111,785.20
  4. Step 4: Simplify right side
    411,258.40x = 68,958,903,743.52
  5. Step 5: Solve for x
    x = 68,958,903,743.52/411,258.40
  6. Step 6: Final answer
    x = 167,677.80

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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.