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Finding the Fourth Proportional to 355,512.80, 490,638 and 202,597.76

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Solution

The fourth proportional to 355,512.80, 490,638 and 202,597.76 is: 279,602.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,512.80 : 490,638 = 202,597.76 : x
  2. Step 2: Convert to fraction form
    355,512.80/490,638 = 202,597.76/x
  3. Step 3: Cross multiply
    355,512.80x = 490,638 × 202,597.76
  4. Step 4: Simplify right side
    355,512.80x = 99,402,159,770.88
  5. Step 5: Solve for x
    x = 99,402,159,770.88/355,512.80
  6. Step 6: Final answer
    x = 279,602.20

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