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Finding the Fourth Proportional to 319,373.39, 479,060.15 and 129,936.84

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Solution

The fourth proportional to 319,373.39, 479,060.15 and 129,936.84 is: 194,905.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,373.39 : 479,060.15 = 129,936.84 : x
  2. Step 2: Convert to fraction form
    319,373.39/479,060.15 = 129,936.84/x
  3. Step 3: Cross multiply
    319,373.39x = 479,060.15 × 129,936.84
  4. Step 4: Simplify right side
    319,373.39x = 62,247,562,060.93
  5. Step 5: Solve for x
    x = 62,247,562,060.93/319,373.39
  6. Step 6: Final answer
    x = 194,905.29

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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.