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Finding the Fourth Proportional to 303,399.60, 454,730.40 and 214,678.68

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Solution

The fourth proportional to 303,399.60, 454,730.40 and 214,678.68 is: 321,756.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,399.60 : 454,730.40 = 214,678.68 : x
  2. Step 2: Convert to fraction form
    303,399.60/454,730.40 = 214,678.68/x
  3. Step 3: Cross multiply
    303,399.60x = 454,730.40 × 214,678.68
  4. Step 4: Simplify right side
    303,399.60x = 97,620,922,027.87
  5. Step 5: Solve for x
    x = 97,620,922,027.87/303,399.60
  6. Step 6: Final answer
    x = 321,756.92

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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.