Home / 262,087.20-393,422.40-143,989.20

Finding the Fourth Proportional to 262,087.20, 393,422.40 and 143,989.20

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Solution

The fourth proportional to 262,087.20, 393,422.40 and 143,989.20 is: 216,144.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,087.20 : 393,422.40 = 143,989.20 : x
  2. Step 2: Convert to fraction form
    262,087.20/393,422.40 = 143,989.20/x
  3. Step 3: Cross multiply
    262,087.20x = 393,422.40 × 143,989.20
  4. Step 4: Simplify right side
    262,087.20x = 56,648,576,638.08
  5. Step 5: Solve for x
    x = 56,648,576,638.08/262,087.20
  6. Step 6: Final answer
    x = 216,144.00

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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.