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Finding the Fourth Proportional to 243,443.21, 365,465.52 and 115,481.84

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Solution

The fourth proportional to 243,443.21, 365,465.52 and 115,481.84 is: 173,365.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,443.21 : 365,465.52 = 115,481.84 : x
  2. Step 2: Convert to fraction form
    243,443.21/365,465.52 = 115,481.84/x
  3. Step 3: Cross multiply
    243,443.21x = 365,465.52 × 115,481.84
  4. Step 4: Simplify right side
    243,443.21x = 42,204,628,878.83
  5. Step 5: Solve for x
    x = 42,204,628,878.83/243,443.21
  6. Step 6: Final answer
    x = 173,365.40

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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.