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Finding the Fourth Proportional to 271,703.60, 407,573.40 and 72,021.20

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Solution

The fourth proportional to 271,703.60, 407,573.40 and 72,021.20 is: 108,036.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,703.60 : 407,573.40 = 72,021.20 : x
  2. Step 2: Convert to fraction form
    271,703.60/407,573.40 = 72,021.20/x
  3. Step 3: Cross multiply
    271,703.60x = 407,573.40 × 72,021.20
  4. Step 4: Simplify right side
    271,703.60x = 29,353,925,356.08
  5. Step 5: Solve for x
    x = 29,353,925,356.08/271,703.60
  6. Step 6: Final answer
    x = 108,036.57

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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.