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Finding the Fourth Proportional to 347,338.60, 521,007.90 and 263,357.80

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Solution

The fourth proportional to 347,338.60, 521,007.90 and 263,357.80 is: 395,036.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,338.60 : 521,007.90 = 263,357.80 : x
  2. Step 2: Convert to fraction form
    347,338.60/521,007.90 = 263,357.80/x
  3. Step 3: Cross multiply
    347,338.60x = 521,007.90 × 263,357.80
  4. Step 4: Simplify right side
    347,338.60x = 137,211,494,326.62
  5. Step 5: Solve for x
    x = 137,211,494,326.62/347,338.60
  6. Step 6: Final answer
    x = 395,036.70

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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.