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Finding the Fourth Proportional to 399,069.45, 598,609.44 and 132,830.01

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Solution

The fourth proportional to 399,069.45, 598,609.44 and 132,830.01 is: 199,246.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,069.45 : 598,609.44 = 132,830.01 : x
  2. Step 2: Convert to fraction form
    399,069.45/598,609.44 = 132,830.01/x
  3. Step 3: Cross multiply
    399,069.45x = 598,609.44 × 132,830.01
  4. Step 4: Simplify right side
    399,069.45x = 79,513,297,901.29
  5. Step 5: Solve for x
    x = 79,513,297,901.29/399,069.45
  6. Step 6: Final answer
    x = 199,246.77

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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.