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Finding the Fourth Proportional to 352,436.40, 486,362.78 and 191,291.50

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Solution

The fourth proportional to 352,436.40, 486,362.78 and 191,291.50 is: 263,982.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,436.40 : 486,362.78 = 191,291.50 : x
  2. Step 2: Convert to fraction form
    352,436.40/486,362.78 = 191,291.50/x
  3. Step 3: Cross multiply
    352,436.40x = 486,362.78 × 191,291.50
  4. Step 4: Simplify right side
    352,436.40x = 93,037,065,730.37
  5. Step 5: Solve for x
    x = 93,037,065,730.37/352,436.40
  6. Step 6: Final answer
    x = 263,982.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.