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Finding the Fourth Proportional to 430,517.46, 645,800.48 and 131,007.80

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Solution

The fourth proportional to 430,517.46, 645,800.48 and 131,007.80 is: 196,519.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,517.46 : 645,800.48 = 131,007.80 : x
  2. Step 2: Convert to fraction form
    430,517.46/645,800.48 = 131,007.80/x
  3. Step 3: Cross multiply
    430,517.46x = 645,800.48 × 131,007.80
  4. Step 4: Simplify right side
    430,517.46x = 84,604,900,123.74
  5. Step 5: Solve for x
    x = 84,604,900,123.74/430,517.46
  6. Step 6: Final answer
    x = 196,519.09

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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.