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Finding the Fourth Proportional to 353,662.43, 487,124.42 and 271,834.20

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Solution

The fourth proportional to 353,662.43, 487,124.42 and 271,834.20 is: 374,416.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,662.43 : 487,124.42 = 271,834.20 : x
  2. Step 2: Convert to fraction form
    353,662.43/487,124.42 = 271,834.20/x
  3. Step 3: Cross multiply
    353,662.43x = 487,124.42 × 271,834.20
  4. Step 4: Simplify right side
    353,662.43x = 132,417,075,651.99
  5. Step 5: Solve for x
    x = 132,417,075,651.99/353,662.43
  6. Step 6: Final answer
    x = 374,416.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.