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Finding the Fourth Proportional to 286,540.80, 429,811.20 and 274,406.40

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Solution

The fourth proportional to 286,540.80, 429,811.20 and 274,406.40 is: 411,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,540.80 : 429,811.20 = 274,406.40 : x
  2. Step 2: Convert to fraction form
    286,540.80/429,811.20 = 274,406.40/x
  3. Step 3: Cross multiply
    286,540.80x = 429,811.20 × 274,406.40
  4. Step 4: Simplify right side
    286,540.80x = 117,942,944,071.68
  5. Step 5: Solve for x
    x = 117,942,944,071.68/286,540.80
  6. Step 6: Final answer
    x = 411,609.60

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Similar ratio
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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.