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Finding the Fourth Proportional to 429,954.80, 644,932.20 and 114,443.60

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Solution

The fourth proportional to 429,954.80, 644,932.20 and 114,443.60 is: 171,665.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,954.80 : 644,932.20 = 114,443.60 : x
  2. Step 2: Convert to fraction form
    429,954.80/644,932.20 = 114,443.60/x
  3. Step 3: Cross multiply
    429,954.80x = 644,932.20 × 114,443.60
  4. Step 4: Simplify right side
    429,954.80x = 73,808,362,723.92
  5. Step 5: Solve for x
    x = 73,808,362,723.92/429,954.80
  6. Step 6: Final answer
    x = 171,665.40

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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.