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Finding the Fourth Proportional to 351,585.81, 485,188.20 and 190,440.47

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Solution

The fourth proportional to 351,585.81, 485,188.20 and 190,440.47 is: 262,807.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,585.81 : 485,188.20 = 190,440.47 : x
  2. Step 2: Convert to fraction form
    351,585.81/485,188.20 = 190,440.47/x
  3. Step 3: Cross multiply
    351,585.81x = 485,188.20 × 190,440.47
  4. Step 4: Simplify right side
    351,585.81x = 92,399,470,059.42
  5. Step 5: Solve for x
    x = 92,399,470,059.42/351,585.81
  6. Step 6: Final answer
    x = 262,807.73

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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.