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Finding the Fourth Proportional to 353,390.02, 488,102.97 and 257,745.22

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Solution

The fourth proportional to 353,390.02, 488,102.97 and 257,745.22 is: 355,998.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,390.02 : 488,102.97 = 257,745.22 : x
  2. Step 2: Convert to fraction form
    353,390.02/488,102.97 = 257,745.22/x
  3. Step 3: Cross multiply
    353,390.02x = 488,102.97 × 257,745.22
  4. Step 4: Simplify right side
    353,390.02x = 125,806,207,385.30
  5. Step 5: Solve for x
    x = 125,806,207,385.30/353,390.02
  6. Step 6: Final answer
    x = 355,998.19

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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.