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Finding the Fourth Proportional to 319,643.28, 479,606.40 and 167,804.64

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Solution

The fourth proportional to 319,643.28, 479,606.40 and 167,804.64 is: 251,781.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,643.28 : 479,606.40 = 167,804.64 : x
  2. Step 2: Convert to fraction form
    319,643.28/479,606.40 = 167,804.64/x
  3. Step 3: Cross multiply
    319,643.28x = 479,606.40 × 167,804.64
  4. Step 4: Simplify right side
    319,643.28x = 80,480,179,293.70
  5. Step 5: Solve for x
    x = 80,480,179,293.70/319,643.28
  6. Step 6: Final answer
    x = 251,781.23

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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.