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Finding the Fourth Proportional to 235,918.40, 353,647.20 and 211,035.20

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Solution

The fourth proportional to 235,918.40, 353,647.20 and 211,035.20 is: 316,346.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,918.40 : 353,647.20 = 211,035.20 : x
  2. Step 2: Convert to fraction form
    235,918.40/353,647.20 = 211,035.20/x
  3. Step 3: Cross multiply
    235,918.40x = 353,647.20 × 211,035.20
  4. Step 4: Simplify right side
    235,918.40x = 74,632,007,581.44
  5. Step 5: Solve for x
    x = 74,632,007,581.44/235,918.40
  6. Step 6: Final answer
    x = 316,346.70

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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.