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Finding the Fourth Proportional to 352,186.58, 528,362.81 and 280,410.96

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Solution

The fourth proportional to 352,186.58, 528,362.81 and 280,410.96 is: 420,682.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,186.58 : 528,362.81 = 280,410.96 : x
  2. Step 2: Convert to fraction form
    352,186.58/528,362.81 = 280,410.96/x
  3. Step 3: Cross multiply
    352,186.58x = 528,362.81 × 280,410.96
  4. Step 4: Simplify right side
    352,186.58x = 148,158,722,780.40
  5. Step 5: Solve for x
    x = 148,158,722,780.40/352,186.58
  6. Step 6: Final answer
    x = 420,682.48

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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.