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Finding the Fourth Proportional to 299,138.80, 448,103.40 and 186,473.20

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Solution

The fourth proportional to 299,138.80, 448,103.40 and 186,473.20 is: 279,332.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,138.80 : 448,103.40 = 186,473.20 : x
  2. Step 2: Convert to fraction form
    299,138.80/448,103.40 = 186,473.20/x
  3. Step 3: Cross multiply
    299,138.80x = 448,103.40 × 186,473.20
  4. Step 4: Simplify right side
    299,138.80x = 83,559,274,928.88
  5. Step 5: Solve for x
    x = 83,559,274,928.88/299,138.80
  6. Step 6: Final answer
    x = 279,332.79

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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.