Home / 278,944.47-385,128.74-214,298.57

Finding the Fourth Proportional to 278,944.47, 385,128.74 and 214,298.57

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Solution

The fourth proportional to 278,944.47, 385,128.74 and 214,298.57 is: 295,874.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,944.47 : 385,128.74 = 214,298.57 : x
  2. Step 2: Convert to fraction form
    278,944.47/385,128.74 = 214,298.57/x
  3. Step 3: Cross multiply
    278,944.47x = 385,128.74 × 214,298.57
  4. Step 4: Simplify right side
    278,944.47x = 82,532,537,176.41
  5. Step 5: Solve for x
    x = 82,532,537,176.41/278,944.47
  6. Step 6: Final answer
    x = 295,874.43

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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.