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Finding the Fourth Proportional to 351,488.40, 485,055.38 and 190,343.52

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Solution

The fourth proportional to 351,488.40, 485,055.38 and 190,343.52 is: 262,674.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,488.40 : 485,055.38 = 190,343.52 : x
  2. Step 2: Convert to fraction form
    351,488.40/485,055.38 = 190,343.52/x
  3. Step 3: Cross multiply
    351,488.40x = 485,055.38 × 190,343.52
  4. Step 4: Simplify right side
    351,488.40x = 92,327,148,424.14
  5. Step 5: Solve for x
    x = 92,327,148,424.14/351,488.40
  6. Step 6: Final answer
    x = 262,674.81

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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.