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Finding the Fourth Proportional to 355,074.84, 490,000.65 and 193,929.96

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Solution

The fourth proportional to 355,074.84, 490,000.65 and 193,929.96 is: 267,621.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,074.84 : 490,000.65 = 193,929.96 : x
  2. Step 2: Convert to fraction form
    355,074.84/490,000.65 = 193,929.96/x
  3. Step 3: Cross multiply
    355,074.84x = 490,000.65 × 193,929.96
  4. Step 4: Simplify right side
    355,074.84x = 95,025,806,454.47
  5. Step 5: Solve for x
    x = 95,025,806,454.47/355,074.84
  6. Step 6: Final answer
    x = 267,621.91

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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.