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Finding the Fourth Proportional to 262,036.71, 393,131.61 and 84,539.79

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Solution

The fourth proportional to 262,036.71, 393,131.61 and 84,539.79 is: 126,834.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,036.71 : 393,131.61 = 84,539.79 : x
  2. Step 2: Convert to fraction form
    262,036.71/393,131.61 = 84,539.79/x
  3. Step 3: Cross multiply
    262,036.71x = 393,131.61 × 84,539.79
  4. Step 4: Simplify right side
    262,036.71x = 33,235,263,751.76
  5. Step 5: Solve for x
    x = 33,235,263,751.76/262,036.71
  6. Step 6: Final answer
    x = 126,834.38

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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.