Home / 214,201.95-321,370.08-128,905.89

Finding the Fourth Proportional to 214,201.95, 321,370.08 and 128,905.89

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Solution

The fourth proportional to 214,201.95, 321,370.08 and 128,905.89 is: 193,399.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,201.95 : 321,370.08 = 128,905.89 : x
  2. Step 2: Convert to fraction form
    214,201.95/321,370.08 = 128,905.89/x
  3. Step 3: Cross multiply
    214,201.95x = 321,370.08 × 128,905.89
  4. Step 4: Simplify right side
    214,201.95x = 41,426,496,181.77
  5. Step 5: Solve for x
    x = 41,426,496,181.77/214,201.95
  6. Step 6: Final answer
    x = 193,399.25

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1.5x scale

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.