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Finding the Fourth Proportional to 353,925.45, 488,505.51 and 218,075.94

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Solution

The fourth proportional to 353,925.45, 488,505.51 and 218,075.94 is: 300,999.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,925.45 : 488,505.51 = 218,075.94 : x
  2. Step 2: Convert to fraction form
    353,925.45/488,505.51 = 218,075.94/x
  3. Step 3: Cross multiply
    353,925.45x = 488,505.51 × 218,075.94
  4. Step 4: Simplify right side
    353,925.45x = 106,531,298,288.43
  5. Step 5: Solve for x
    x = 106,531,298,288.43/353,925.45
  6. Step 6: Final answer
    x = 300,999.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.