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Finding the Fourth Proportional to 228,918.60, 343,410.30 and 71,130.60

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Solution

The fourth proportional to 228,918.60, 343,410.30 and 71,130.60 is: 106,705.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,918.60 : 343,410.30 = 71,130.60 : x
  2. Step 2: Convert to fraction form
    228,918.60/343,410.30 = 71,130.60/x
  3. Step 3: Cross multiply
    228,918.60x = 343,410.30 × 71,130.60
  4. Step 4: Simplify right side
    228,918.60x = 24,426,980,685.18
  5. Step 5: Solve for x
    x = 24,426,980,685.18/228,918.60
  6. Step 6: Final answer
    x = 106,705.97

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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.