Home / 427,527.20-641,290.80-228,461.60

Finding the Fourth Proportional to 427,527.20, 641,290.80 and 228,461.60

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Solution

The fourth proportional to 427,527.20, 641,290.80 and 228,461.60 is: 342,692.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,527.20 : 641,290.80 = 228,461.60 : x
  2. Step 2: Convert to fraction form
    427,527.20/641,290.80 = 228,461.60/x
  3. Step 3: Cross multiply
    427,527.20x = 641,290.80 × 228,461.60
  4. Step 4: Simplify right side
    427,527.20x = 146,510,322,233.28
  5. Step 5: Solve for x
    x = 146,510,322,233.28/427,527.20
  6. Step 6: Final answer
    x = 342,692.40

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Similar ratio
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1.5x scale

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.