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Finding the Fourth Proportional to 339,332, 468,297.60 and 188,438.72

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Solution

The fourth proportional to 339,332, 468,297.60 and 188,438.72 is: 260,056.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,332 : 468,297.60 = 188,438.72 : x
  2. Step 2: Convert to fraction form
    339,332/468,297.60 = 188,438.72/x
  3. Step 3: Cross multiply
    339,332x = 468,297.60 × 188,438.72
  4. Step 4: Simplify right side
    339,332x = 88,245,400,323.07
  5. Step 5: Solve for x
    x = 88,245,400,323.07/339,332
  6. Step 6: Final answer
    x = 260,056.23

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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.