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Finding the Fourth Proportional to 268,519.40, 403,090.30 and 144,103.40

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Solution

The fourth proportional to 268,519.40, 403,090.30 and 144,103.40 is: 216,322.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,519.40 : 403,090.30 = 144,103.40 : x
  2. Step 2: Convert to fraction form
    268,519.40/403,090.30 = 144,103.40/x
  3. Step 3: Cross multiply
    268,519.40x = 403,090.30 × 144,103.40
  4. Step 4: Simplify right side
    268,519.40x = 58,086,682,737.02
  5. Step 5: Solve for x
    x = 58,086,682,737.02/268,519.40
  6. Step 6: Final answer
    x = 216,322.11

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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.