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Finding the Fourth Proportional to 351,755.40, 528,339.17 and 209,877.54

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Solution

The fourth proportional to 351,755.40, 528,339.17 and 209,877.54 is: 315,237.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,755.40 : 528,339.17 = 209,877.54 : x
  2. Step 2: Convert to fraction form
    351,755.40/528,339.17 = 209,877.54/x
  3. Step 3: Cross multiply
    351,755.40x = 528,339.17 × 209,877.54
  4. Step 4: Simplify right side
    351,755.40x = 110,886,525,285.24
  5. Step 5: Solve for x
    x = 110,886,525,285.24/351,755.40
  6. Step 6: Final answer
    x = 315,237.59

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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.