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Finding the Fourth Proportional to 352,599.40, 529,028.70 and 142,258.60

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Solution

The fourth proportional to 352,599.40, 529,028.70 and 142,258.60 is: 213,440.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,599.40 : 529,028.70 = 142,258.60 : x
  2. Step 2: Convert to fraction form
    352,599.40/529,028.70 = 142,258.60/x
  3. Step 3: Cross multiply
    352,599.40x = 529,028.70 × 142,258.60
  4. Step 4: Simplify right side
    352,599.40x = 75,258,882,221.82
  5. Step 5: Solve for x
    x = 75,258,882,221.82/352,599.40
  6. Step 6: Final answer
    x = 213,440.19

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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.