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Finding the Fourth Proportional to 355,561.30, 490,675.05 and 202,592.80

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Solution

The fourth proportional to 355,561.30, 490,675.05 and 202,592.80 is: 279,578.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,561.30 : 490,675.05 = 202,592.80 : x
  2. Step 2: Convert to fraction form
    355,561.30/490,675.05 = 202,592.80/x
  3. Step 3: Cross multiply
    355,561.30x = 490,675.05 × 202,592.80
  4. Step 4: Simplify right side
    355,561.30x = 99,407,232,269.64
  5. Step 5: Solve for x
    x = 99,407,232,269.64/355,561.30
  6. Step 6: Final answer
    x = 279,578.32

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1.5x scale

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.