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Finding the Fourth Proportional to 262,145.80, 393,510.30 and 162,418.60

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Solution

The fourth proportional to 262,145.80, 393,510.30 and 162,418.60 is: 243,808.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,145.80 : 393,510.30 = 162,418.60 : x
  2. Step 2: Convert to fraction form
    262,145.80/393,510.30 = 162,418.60/x
  3. Step 3: Cross multiply
    262,145.80x = 393,510.30 × 162,418.60
  4. Step 4: Simplify right side
    262,145.80x = 63,913,392,011.58
  5. Step 5: Solve for x
    x = 63,913,392,011.58/262,145.80
  6. Step 6: Final answer
    x = 243,808.57

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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.