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Finding the Fourth Proportional to 245,626.40, 368,439.60 and 127,258.40

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Solution

The fourth proportional to 245,626.40, 368,439.60 and 127,258.40 is: 190,887.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,626.40 : 368,439.60 = 127,258.40 : x
  2. Step 2: Convert to fraction form
    245,626.40/368,439.60 = 127,258.40/x
  3. Step 3: Cross multiply
    245,626.40x = 368,439.60 × 127,258.40
  4. Step 4: Simplify right side
    245,626.40x = 46,887,033,992.64
  5. Step 5: Solve for x
    x = 46,887,033,992.64/245,626.40
  6. Step 6: Final answer
    x = 190,887.60

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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.