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Finding the Fourth Proportional to 262,435.80, 393,653.70 and 181,954.20

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Solution

The fourth proportional to 262,435.80, 393,653.70 and 181,954.20 is: 272,931.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,435.80 : 393,653.70 = 181,954.20 : x
  2. Step 2: Convert to fraction form
    262,435.80/393,653.70 = 181,954.20/x
  3. Step 3: Cross multiply
    262,435.80x = 393,653.70 × 181,954.20
  4. Step 4: Simplify right side
    262,435.80x = 71,626,944,060.54
  5. Step 5: Solve for x
    x = 71,626,944,060.54/262,435.80
  6. Step 6: Final answer
    x = 272,931.30

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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.