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Finding the Fourth Proportional to 374,939.74, 517,416.88 and 205,173.88

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Solution

The fourth proportional to 374,939.74, 517,416.88 and 205,173.88 is: 283,139.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,939.74 : 517,416.88 = 205,173.88 : x
  2. Step 2: Convert to fraction form
    374,939.74/517,416.88 = 205,173.88/x
  3. Step 3: Cross multiply
    374,939.74x = 517,416.88 × 205,173.88
  4. Step 4: Simplify right side
    374,939.74x = 106,160,428,847.09
  5. Step 5: Solve for x
    x = 106,160,428,847.09/374,939.74
  6. Step 6: Final answer
    x = 283,139.98

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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.