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Finding the Fourth Proportional to 351,811.65, 485,498.84 and 190,670.61

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Solution

The fourth proportional to 351,811.65, 485,498.84 and 190,670.61 is: 263,124.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,811.65 : 485,498.84 = 190,670.61 : x
  2. Step 2: Convert to fraction form
    351,811.65/485,498.84 = 190,670.61/x
  3. Step 3: Cross multiply
    351,811.65x = 485,498.84 × 190,670.61
  4. Step 4: Simplify right side
    351,811.65x = 92,570,359,023.74
  5. Step 5: Solve for x
    x = 92,570,359,023.74/351,811.65
  6. Step 6: Final answer
    x = 263,124.77

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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.