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Finding the Fourth Proportional to 339,390, 468,358.20 and 188,501.04

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Solution

The fourth proportional to 339,390, 468,358.20 and 188,501.04 is: 260,131.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,390 : 468,358.20 = 188,501.04 : x
  2. Step 2: Convert to fraction form
    339,390/468,358.20 = 188,501.04/x
  3. Step 3: Cross multiply
    339,390x = 468,358.20 × 188,501.04
  4. Step 4: Simplify right side
    339,390x = 88,286,007,792.53
  5. Step 5: Solve for x
    x = 88,286,007,792.53/339,390
  6. Step 6: Final answer
    x = 260,131.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.