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Finding the Fourth Proportional to 352,184.40, 528,665.40 and 219,214.80

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Solution

The fourth proportional to 352,184.40, 528,665.40 and 219,214.80 is: 329,064.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,184.40 : 528,665.40 = 219,214.80 : x
  2. Step 2: Convert to fraction form
    352,184.40/528,665.40 = 219,214.80/x
  3. Step 3: Cross multiply
    352,184.40x = 528,665.40 × 219,214.80
  4. Step 4: Simplify right side
    352,184.40x = 115,891,279,927.92
  5. Step 5: Solve for x
    x = 115,891,279,927.92/352,184.40
  6. Step 6: Final answer
    x = 329,064.21

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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.