Home / 420,263.56-579,960.94-238,975.50

Finding the Fourth Proportional to 420,263.56, 579,960.94 and 238,975.50

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Solution

The fourth proportional to 420,263.56, 579,960.94 and 238,975.50 is: 329,784.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,263.56 : 579,960.94 = 238,975.50 : x
  2. Step 2: Convert to fraction form
    420,263.56/579,960.94 = 238,975.50/x
  3. Step 3: Cross multiply
    420,263.56x = 579,960.94 × 238,975.50
  4. Step 4: Simplify right side
    420,263.56x = 138,596,455,616.97
  5. Step 5: Solve for x
    x = 138,596,455,616.97/420,263.56
  6. Step 6: Final answer
    x = 329,784.61

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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.