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Finding the Fourth Proportional to 377,297.66, 520,659.91 and 207,531.78

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Solution

The fourth proportional to 377,297.66, 520,659.91 and 207,531.78 is: 286,387.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,297.66 : 520,659.91 = 207,531.78 : x
  2. Step 2: Convert to fraction form
    377,297.66/520,659.91 = 207,531.78/x
  3. Step 3: Cross multiply
    377,297.66x = 520,659.91 × 207,531.78
  4. Step 4: Simplify right side
    377,297.66x = 108,053,477,896.94
  5. Step 5: Solve for x
    x = 108,053,477,896.94/377,297.66
  6. Step 6: Final answer
    x = 286,387.88

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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.