Home / 638,434.96-957,871.20-218,006.08

Finding the Fourth Proportional to 638,434.96, 957,871.20 and 218,006.08

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Solution

The fourth proportional to 638,434.96, 957,871.20 and 218,006.08 is: 327,083.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,434.96 : 957,871.20 = 218,006.08 : x
  2. Step 2: Convert to fraction form
    638,434.96/957,871.20 = 218,006.08/x
  3. Step 3: Cross multiply
    638,434.96x = 957,871.20 × 218,006.08
  4. Step 4: Simplify right side
    638,434.96x = 208,821,745,456.90
  5. Step 5: Solve for x
    x = 208,821,745,456.90/638,434.96
  6. Step 6: Final answer
    x = 327,083.82

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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.