Home / 420,214.56-579,904.32-229,235.04

Finding the Fourth Proportional to 420,214.56, 579,904.32 and 229,235.04

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Solution

The fourth proportional to 420,214.56, 579,904.32 and 229,235.04 is: 316,348.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,214.56 : 579,904.32 = 229,235.04 : x
  2. Step 2: Convert to fraction form
    420,214.56/579,904.32 = 229,235.04/x
  3. Step 3: Cross multiply
    420,214.56x = 579,904.32 × 229,235.04
  4. Step 4: Simplify right side
    420,214.56x = 132,934,389,991.37
  5. Step 5: Solve for x
    x = 132,934,389,991.37/420,214.56
  6. Step 6: Final answer
    x = 316,348.84

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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.