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Finding the Fourth Proportional to 201,697.60, 302,546.40 and 130,838.80

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Solution

The fourth proportional to 201,697.60, 302,546.40 and 130,838.80 is: 196,258.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,697.60 : 302,546.40 = 130,838.80 : x
  2. Step 2: Convert to fraction form
    201,697.60/302,546.40 = 130,838.80/x
  3. Step 3: Cross multiply
    201,697.60x = 302,546.40 × 130,838.80
  4. Step 4: Simplify right side
    201,697.60x = 39,584,807,920.32
  5. Step 5: Solve for x
    x = 39,584,807,920.32/201,697.60
  6. Step 6: Final answer
    x = 196,258.20

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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.