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Finding the Fourth Proportional to 451,416.66, 677,190.51 and 240,939.78

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Solution

The fourth proportional to 451,416.66, 677,190.51 and 240,939.78 is: 361,444.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,416.66 : 677,190.51 = 240,939.78 : x
  2. Step 2: Convert to fraction form
    451,416.66/677,190.51 = 240,939.78/x
  3. Step 3: Cross multiply
    451,416.66x = 677,190.51 × 240,939.78
  4. Step 4: Simplify right side
    451,416.66x = 163,162,132,497.49
  5. Step 5: Solve for x
    x = 163,162,132,497.49/451,416.66
  6. Step 6: Final answer
    x = 361,444.64

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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.