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Finding the Fourth Proportional to 351,452.80, 485,005.12 and 190,309.12

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Solution

The fourth proportional to 351,452.80, 485,005.12 and 190,309.12 is: 262,626.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,452.80 : 485,005.12 = 190,309.12 : x
  2. Step 2: Convert to fraction form
    351,452.80/485,005.12 = 190,309.12/x
  3. Step 3: Cross multiply
    351,452.80x = 485,005.12 × 190,309.12
  4. Step 4: Simplify right side
    351,452.80x = 92,300,897,582.69
  5. Step 5: Solve for x
    x = 92,300,897,582.69/351,452.80
  6. Step 6: Final answer
    x = 262,626.72

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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.