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Finding the Fourth Proportional to 381,750.90, 572,480.55 and 115,422.90

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Solution

The fourth proportional to 381,750.90, 572,480.55 and 115,422.90 is: 173,090.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,750.90 : 572,480.55 = 115,422.90 : x
  2. Step 2: Convert to fraction form
    381,750.90/572,480.55 = 115,422.90/x
  3. Step 3: Cross multiply
    381,750.90x = 572,480.55 × 115,422.90
  4. Step 4: Simplify right side
    381,750.90x = 66,077,365,274.60
  5. Step 5: Solve for x
    x = 66,077,365,274.60/381,750.90
  6. Step 6: Final answer
    x = 173,090.27

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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.