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Finding the Fourth Proportional to 319,477.20, 479,129.40 and 94,837.20

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Solution

The fourth proportional to 319,477.20, 479,129.40 and 94,837.20 is: 142,230.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,477.20 : 479,129.40 = 94,837.20 : x
  2. Step 2: Convert to fraction form
    319,477.20/479,129.40 = 94,837.20/x
  3. Step 3: Cross multiply
    319,477.20x = 479,129.40 × 94,837.20
  4. Step 4: Simplify right side
    319,477.20x = 45,439,290,733.68
  5. Step 5: Solve for x
    x = 45,439,290,733.68/319,477.20
  6. Step 6: Final answer
    x = 142,230.15

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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.