Home / 305,836.46-421,884.18-284,186.98

Finding the Fourth Proportional to 305,836.46, 421,884.18 and 284,186.98

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Solution

The fourth proportional to 305,836.46, 421,884.18 and 284,186.98 is: 392,019.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,836.46 : 421,884.18 = 284,186.98 : x
  2. Step 2: Convert to fraction form
    305,836.46/421,884.18 = 284,186.98/x
  3. Step 3: Cross multiply
    305,836.46x = 421,884.18 × 284,186.98
  4. Step 4: Simplify right side
    305,836.46x = 119,893,988,914.56
  5. Step 5: Solve for x
    x = 119,893,988,914.56/305,836.46
  6. Step 6: Final answer
    x = 392,019.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.