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Finding the Fourth Proportional to 418,906.88, 578,107.20 and 240,093.44

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Solution

The fourth proportional to 418,906.88, 578,107.20 and 240,093.44 is: 331,337.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,906.88 : 578,107.20 = 240,093.44 : x
  2. Step 2: Convert to fraction form
    418,906.88/578,107.20 = 240,093.44/x
  3. Step 3: Cross multiply
    418,906.88x = 578,107.20 × 240,093.44
  4. Step 4: Simplify right side
    418,906.88x = 138,799,746,336.77
  5. Step 5: Solve for x
    x = 138,799,746,336.77/418,906.88
  6. Step 6: Final answer
    x = 331,337.95

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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.