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Finding the Fourth Proportional to 319,433.52, 479,118.39 and 129,905.07

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Solution

The fourth proportional to 319,433.52, 479,118.39 and 129,905.07 is: 194,844.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,433.52 : 479,118.39 = 129,905.07 : x
  2. Step 2: Convert to fraction form
    319,433.52/479,118.39 = 129,905.07/x
  3. Step 3: Cross multiply
    319,433.52x = 479,118.39 × 129,905.07
  4. Step 4: Simplify right side
    319,433.52x = 62,239,906,438.12
  5. Step 5: Solve for x
    x = 62,239,906,438.12/319,433.52
  6. Step 6: Final answer
    x = 194,844.63

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1.5x scale

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.