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Finding the Fourth Proportional to 352,185.83, 528,361.68 and 280,410.21

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Solution

The fourth proportional to 352,185.83, 528,361.68 and 280,410.21 is: 420,681.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,185.83 : 528,361.68 = 280,410.21 : x
  2. Step 2: Convert to fraction form
    352,185.83/528,361.68 = 280,410.21/x
  3. Step 3: Cross multiply
    352,185.83x = 528,361.68 × 280,410.21
  4. Step 4: Simplify right side
    352,185.83x = 148,158,009,644.75
  5. Step 5: Solve for x
    x = 148,158,009,644.75/352,185.83
  6. Step 6: Final answer
    x = 420,681.35

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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.