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Finding the Fourth Proportional to 231,858.60, 348,210.30 and 138,546.60

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Solution

The fourth proportional to 231,858.60, 348,210.30 and 138,546.60 is: 208,072.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,858.60 : 348,210.30 = 138,546.60 : x
  2. Step 2: Convert to fraction form
    231,858.60/348,210.30 = 138,546.60/x
  3. Step 3: Cross multiply
    231,858.60x = 348,210.30 × 138,546.60
  4. Step 4: Simplify right side
    231,858.60x = 48,243,353,149.98
  5. Step 5: Solve for x
    x = 48,243,353,149.98/231,858.60
  6. Step 6: Final answer
    x = 208,072.30

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1.5x scale

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.