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Finding the Fourth Proportional to 318,107.52, 477,338.40 and 271,572.48

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Solution

The fourth proportional to 318,107.52, 477,338.40 and 271,572.48 is: 407,509.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,107.52 : 477,338.40 = 271,572.48 : x
  2. Step 2: Convert to fraction form
    318,107.52/477,338.40 = 271,572.48/x
  3. Step 3: Cross multiply
    318,107.52x = 477,338.40 × 271,572.48
  4. Step 4: Simplify right side
    318,107.52x = 129,631,973,087.23
  5. Step 5: Solve for x
    x = 129,631,973,087.23/318,107.52
  6. Step 6: Final answer
    x = 407,509.93

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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.