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Finding the Fourth Proportional to 351,792.40, 528,077.40 and 218,822.80

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Solution

The fourth proportional to 351,792.40, 528,077.40 and 218,822.80 is: 328,476.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,792.40 : 528,077.40 = 218,822.80 : x
  2. Step 2: Convert to fraction form
    351,792.40/528,077.40 = 218,822.80/x
  3. Step 3: Cross multiply
    351,792.40x = 528,077.40 × 218,822.80
  4. Step 4: Simplify right side
    351,792.40x = 115,555,375,284.72
  5. Step 5: Solve for x
    x = 115,555,375,284.72/351,792.40
  6. Step 6: Final answer
    x = 328,476.04

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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.