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Finding the Fourth Proportional to 228,214.60, 342,321.90 and 103,555.60

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Solution

The fourth proportional to 228,214.60, 342,321.90 and 103,555.60 is: 155,333.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,214.60 : 342,321.90 = 103,555.60 : x
  2. Step 2: Convert to fraction form
    228,214.60/342,321.90 = 103,555.60/x
  3. Step 3: Cross multiply
    228,214.60x = 342,321.90 × 103,555.60
  4. Step 4: Simplify right side
    228,214.60x = 35,449,349,747.64
  5. Step 5: Solve for x
    x = 35,449,349,747.64/228,214.60
  6. Step 6: Final answer
    x = 155,333.40

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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.