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Finding the Fourth Proportional to 351,499.60, 485,069.92 and 190,354.93

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Solution

The fourth proportional to 351,499.60, 485,069.92 and 190,354.93 is: 262,690.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,499.60 : 485,069.92 = 190,354.93 : x
  2. Step 2: Convert to fraction form
    351,499.60/485,069.92 = 190,354.93/x
  3. Step 3: Cross multiply
    351,499.60x = 485,069.92 × 190,354.93
  4. Step 4: Simplify right side
    351,499.60x = 92,335,448,978.14
  5. Step 5: Solve for x
    x = 92,335,448,978.14/351,499.60
  6. Step 6: Final answer
    x = 262,690.05

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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.