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Finding the Fourth Proportional to 352,506.72, 528,820.26 and 139,163.04

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Solution

The fourth proportional to 352,506.72, 528,820.26 and 139,163.04 is: 208,768.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,506.72 : 528,820.26 = 139,163.04 : x
  2. Step 2: Convert to fraction form
    352,506.72/528,820.26 = 139,163.04/x
  3. Step 3: Cross multiply
    352,506.72x = 528,820.26 × 139,163.04
  4. Step 4: Simplify right side
    352,506.72x = 73,592,234,995.19
  5. Step 5: Solve for x
    x = 73,592,234,995.19/352,506.72
  6. Step 6: Final answer
    x = 208,768.32

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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.