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Finding the Fourth Proportional to 319,607.82, 479,625.75 and 132,619.50

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Solution

The fourth proportional to 319,607.82, 479,625.75 and 132,619.50 is: 199,018.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,607.82 : 479,625.75 = 132,619.50 : x
  2. Step 2: Convert to fraction form
    319,607.82/479,625.75 = 132,619.50/x
  3. Step 3: Cross multiply
    319,607.82x = 479,625.75 × 132,619.50
  4. Step 4: Simplify right side
    319,607.82x = 63,607,724,090.90
  5. Step 5: Solve for x
    x = 63,607,724,090.90/319,607.82
  6. Step 6: Final answer
    x = 199,018.05

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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.