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Finding the Fourth Proportional to 352,126.80, 528,125.40 and 218,768.40

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Solution

The fourth proportional to 352,126.80, 528,125.40 and 218,768.40 is: 328,112.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,126.80 : 528,125.40 = 218,768.40 : x
  2. Step 2: Convert to fraction form
    352,126.80/528,125.40 = 218,768.40/x
  3. Step 3: Cross multiply
    352,126.80x = 528,125.40 × 218,768.40
  4. Step 4: Simplify right side
    352,126.80x = 115,537,148,757.36
  5. Step 5: Solve for x
    x = 115,537,148,757.36/352,126.80
  6. Step 6: Final answer
    x = 328,112.34

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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.