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Finding the Fourth Proportional to 319,690.76, 479,531.96 and 91,992.32

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Solution

The fourth proportional to 319,690.76, 479,531.96 and 91,992.32 is: 137,987.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,690.76 : 479,531.96 = 91,992.32 : x
  2. Step 2: Convert to fraction form
    319,690.76/479,531.96 = 91,992.32/x
  3. Step 3: Cross multiply
    319,690.76x = 479,531.96 × 91,992.32
  4. Step 4: Simplify right side
    319,690.76x = 44,113,254,656.93
  5. Step 5: Solve for x
    x = 44,113,254,656.93/319,690.76
  6. Step 6: Final answer
    x = 137,987.27

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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.