Home / 217,258.40-325,887.60-128,466.20

Finding the Fourth Proportional to 217,258.40, 325,887.60 and 128,466.20

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Solution

The fourth proportional to 217,258.40, 325,887.60 and 128,466.20 is: 192,699.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,258.40 : 325,887.60 = 128,466.20 : x
  2. Step 2: Convert to fraction form
    217,258.40/325,887.60 = 128,466.20/x
  3. Step 3: Cross multiply
    217,258.40x = 325,887.60 × 128,466.20
  4. Step 4: Simplify right side
    217,258.40x = 41,865,541,599.12
  5. Step 5: Solve for x
    x = 41,865,541,599.12/217,258.40
  6. Step 6: Final answer
    x = 192,699.30

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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.