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Finding the Fourth Proportional to 319,599.51, 479,415.78 and 303,438.34

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Solution

The fourth proportional to 319,599.51, 479,415.78 and 303,438.34 is: 455,173.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,599.51 : 479,415.78 = 303,438.34 : x
  2. Step 2: Convert to fraction form
    319,599.51/479,415.78 = 303,438.34/x
  3. Step 3: Cross multiply
    319,599.51x = 479,415.78 × 303,438.34
  4. Step 4: Simplify right side
    319,599.51x = 145,473,128,453.01
  5. Step 5: Solve for x
    x = 145,473,128,453.01/319,599.51
  6. Step 6: Final answer
    x = 455,173.20

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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.