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Finding the Fourth Proportional to 323,416.60, 485,412.90 and 190,130.20

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Solution

The fourth proportional to 323,416.60, 485,412.90 and 190,130.20 is: 285,364.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,416.60 : 485,412.90 = 190,130.20 : x
  2. Step 2: Convert to fraction form
    323,416.60/485,412.90 = 190,130.20/x
  3. Step 3: Cross multiply
    323,416.60x = 485,412.90 × 190,130.20
  4. Step 4: Simplify right side
    323,416.60x = 92,291,651,759.58
  5. Step 5: Solve for x
    x = 92,291,651,759.58/323,416.60
  6. Step 6: Final answer
    x = 285,364.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.