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Finding the Fourth Proportional to 319,665.05, 479,444.11 and 117,219.32

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Solution

The fourth proportional to 319,665.05, 479,444.11 and 117,219.32 is: 175,809.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,665.05 : 479,444.11 = 117,219.32 : x
  2. Step 2: Convert to fraction form
    319,665.05/479,444.11 = 117,219.32/x
  3. Step 3: Cross multiply
    319,665.05x = 479,444.11 × 117,219.32
  4. Step 4: Simplify right side
    319,665.05x = 56,200,112,552.21
  5. Step 5: Solve for x
    x = 56,200,112,552.21/319,665.05
  6. Step 6: Final answer
    x = 175,809.37

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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.