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Finding the Fourth Proportional to 351,774.40, 528,050.40 and 218,804.80

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Solution

The fourth proportional to 351,774.40, 528,050.40 and 218,804.80 is: 328,449.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,774.40 : 528,050.40 = 218,804.80 : x
  2. Step 2: Convert to fraction form
    351,774.40/528,050.40 = 218,804.80/x
  3. Step 3: Cross multiply
    351,774.40x = 528,050.40 × 218,804.80
  4. Step 4: Simplify right side
    351,774.40x = 115,539,962,161.92
  5. Step 5: Solve for x
    x = 115,539,962,161.92/351,774.40
  6. Step 6: Final answer
    x = 328,449.03

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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.