Home / 280,965.54-420,937.89-162,386.38

Finding the Fourth Proportional to 280,965.54, 420,937.89 and 162,386.38

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Solution

The fourth proportional to 280,965.54, 420,937.89 and 162,386.38 is: 243,284.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,965.54 : 420,937.89 = 162,386.38 : x
  2. Step 2: Convert to fraction form
    280,965.54/420,937.89 = 162,386.38/x
  3. Step 3: Cross multiply
    280,965.54x = 420,937.89 × 162,386.38
  4. Step 4: Simplify right side
    280,965.54x = 68,354,580,161.94
  5. Step 5: Solve for x
    x = 68,354,580,161.94/280,965.54
  6. Step 6: Final answer
    x = 243,284.57

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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.