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Finding the Fourth Proportional to 352,108.40, 528,940.20 and 338,889.20

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Solution

The fourth proportional to 352,108.40, 528,940.20 and 338,889.20 is: 509,082.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,108.40 : 528,940.20 = 338,889.20 : x
  2. Step 2: Convert to fraction form
    352,108.40/528,940.20 = 338,889.20/x
  3. Step 3: Cross multiply
    352,108.40x = 528,940.20 × 338,889.20
  4. Step 4: Simplify right side
    352,108.40x = 179,252,121,225.84
  5. Step 5: Solve for x
    x = 179,252,121,225.84/352,108.40
  6. Step 6: Final answer
    x = 509,082.21

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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.