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Finding the Fourth Proportional to 352,135.10, 528,208.22 and 85,900.65

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Solution

The fourth proportional to 352,135.10, 528,208.22 and 85,900.65 is: 128,852.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,135.10 : 528,208.22 = 85,900.65 : x
  2. Step 2: Convert to fraction form
    352,135.10/528,208.22 = 85,900.65/x
  3. Step 3: Cross multiply
    352,135.10x = 528,208.22 × 85,900.65
  4. Step 4: Simplify right side
    352,135.10x = 45,373,429,433.34
  5. Step 5: Solve for x
    x = 45,373,429,433.34/352,135.10
  6. Step 6: Final answer
    x = 128,852.33

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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.