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Finding the Fourth Proportional to 228,318.20, 342,477.30 and 103,659.20

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Solution

The fourth proportional to 228,318.20, 342,477.30 and 103,659.20 is: 155,488.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,318.20 : 342,477.30 = 103,659.20 : x
  2. Step 2: Convert to fraction form
    228,318.20/342,477.30 = 103,659.20/x
  3. Step 3: Cross multiply
    228,318.20x = 342,477.30 × 103,659.20
  4. Step 4: Simplify right side
    228,318.20x = 35,500,922,936.16
  5. Step 5: Solve for x
    x = 35,500,922,936.16/228,318.20
  6. Step 6: Final answer
    x = 155,488.80

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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.