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Finding the Fourth Proportional to 661,672.70, 992,515.20 and 188,358.04

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Solution

The fourth proportional to 661,672.70, 992,515.20 and 188,358.04 is: 282,538.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,672.70 : 992,515.20 = 188,358.04 : x
  2. Step 2: Convert to fraction form
    661,672.70/992,515.20 = 188,358.04/x
  3. Step 3: Cross multiply
    661,672.70x = 992,515.20 × 188,358.04
  4. Step 4: Simplify right side
    661,672.70x = 186,948,217,742.21
  5. Step 5: Solve for x
    x = 186,948,217,742.21/661,672.70
  6. Step 6: Final answer
    x = 282,538.81

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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.