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Finding the Fourth Proportional to 355,125.94, 490,070.86 and 193,981.03

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Solution

The fourth proportional to 355,125.94, 490,070.86 and 193,981.03 is: 267,692.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,125.94 : 490,070.86 = 193,981.03 : x
  2. Step 2: Convert to fraction form
    355,125.94/490,070.86 = 193,981.03/x
  3. Step 3: Cross multiply
    355,125.94x = 490,070.86 × 193,981.03
  4. Step 4: Simplify right side
    355,125.94x = 95,064,448,485.66
  5. Step 5: Solve for x
    x = 95,064,448,485.66/355,125.94
  6. Step 6: Final answer
    x = 267,692.21

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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.