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Finding the Fourth Proportional to 319,807.42, 479,186.24 and 109,330.54

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Solution

The fourth proportional to 319,807.42, 479,186.24 and 109,330.54 is: 163,816.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,807.42 : 479,186.24 = 109,330.54 : x
  2. Step 2: Convert to fraction form
    319,807.42/479,186.24 = 109,330.54/x
  3. Step 3: Cross multiply
    319,807.42x = 479,186.24 × 109,330.54
  4. Step 4: Simplify right side
    319,807.42x = 52,389,690,379.77
  5. Step 5: Solve for x
    x = 52,389,690,379.77/319,807.42
  6. Step 6: Final answer
    x = 163,816.37

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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.