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Finding the Fourth Proportional to 355,908.86, 491,120.79 and 240,953.66

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Solution

The fourth proportional to 355,908.86, 491,120.79 and 240,953.66 is: 332,493.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,908.86 : 491,120.79 = 240,953.66 : x
  2. Step 2: Convert to fraction form
    355,908.86/491,120.79 = 240,953.66/x
  3. Step 3: Cross multiply
    355,908.86x = 491,120.79 × 240,953.66
  4. Step 4: Simplify right side
    355,908.86x = 118,337,351,852.59
  5. Step 5: Solve for x
    x = 118,337,351,852.59/355,908.86
  6. Step 6: Final answer
    x = 332,493.41

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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.