Home / 323,128.49-445,627.01-202,280.78

Finding the Fourth Proportional to 323,128.49, 445,627.01 and 202,280.78

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Solution

The fourth proportional to 323,128.49, 445,627.01 and 202,280.78 is: 278,965.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,128.49 : 445,627.01 = 202,280.78 : x
  2. Step 2: Convert to fraction form
    323,128.49/445,627.01 = 202,280.78/x
  3. Step 3: Cross multiply
    323,128.49x = 445,627.01 × 202,280.78
  4. Step 4: Simplify right side
    323,128.49x = 90,141,779,171.87
  5. Step 5: Solve for x
    x = 90,141,779,171.87/323,128.49
  6. Step 6: Final answer
    x = 278,965.74

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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.