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Finding the Fourth Proportional to 243,410.76, 365,150.69 and 74,945.09

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Solution

The fourth proportional to 243,410.76, 365,150.69 and 74,945.09 is: 112,428.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,410.76 : 365,150.69 = 74,945.09 : x
  2. Step 2: Convert to fraction form
    243,410.76/365,150.69 = 74,945.09/x
  3. Step 3: Cross multiply
    243,410.76x = 365,150.69 × 74,945.09
  4. Step 4: Simplify right side
    243,410.76x = 27,366,250,512.40
  5. Step 5: Solve for x
    x = 27,366,250,512.40/243,410.76
  6. Step 6: Final answer
    x = 112,428.27

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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.