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Finding the Fourth Proportional to 355,608.52, 490,748.28 and 202,643.42

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Solution

The fourth proportional to 355,608.52, 490,748.28 and 202,643.42 is: 279,652.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,608.52 : 490,748.28 = 202,643.42 : x
  2. Step 2: Convert to fraction form
    355,608.52/490,748.28 = 202,643.42/x
  3. Step 3: Cross multiply
    355,608.52x = 490,748.28 × 202,643.42
  4. Step 4: Simplify right side
    355,608.52x = 99,446,911,805.10
  5. Step 5: Solve for x
    x = 99,446,911,805.10/355,608.52
  6. Step 6: Final answer
    x = 279,652.78

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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.