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Finding the Fourth Proportional to 271,575.03, 407,203.65 and 81,978.57

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Solution

The fourth proportional to 271,575.03, 407,203.65 and 81,978.57 is: 122,919.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,575.03 : 407,203.65 = 81,978.57 : x
  2. Step 2: Convert to fraction form
    271,575.03/407,203.65 = 81,978.57/x
  3. Step 3: Cross multiply
    271,575.03x = 407,203.65 × 81,978.57
  4. Step 4: Simplify right side
    271,575.03x = 33,381,972,925.78
  5. Step 5: Solve for x
    x = 33,381,972,925.78/271,575.03
  6. Step 6: Final answer
    x = 122,919.89

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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.