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Finding the Fourth Proportional to 319,265.84, 479,210.40 and 263,672.30

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Solution

The fourth proportional to 319,265.84, 479,210.40 and 263,672.30 is: 395,765.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,265.84 : 479,210.40 = 263,672.30 : x
  2. Step 2: Convert to fraction form
    319,265.84/479,210.40 = 263,672.30/x
  3. Step 3: Cross multiply
    319,265.84x = 479,210.40 × 263,672.30
  4. Step 4: Simplify right side
    319,265.84x = 126,354,505,955.87
  5. Step 5: Solve for x
    x = 126,354,505,955.87/319,265.84
  6. Step 6: Final answer
    x = 395,765.82

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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.