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Finding the Fourth Proportional to 283,987.40, 391,832.71 and 173,578.10

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Solution

The fourth proportional to 283,987.40, 391,832.71 and 173,578.10 is: 239,495.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,987.40 : 391,832.71 = 173,578.10 : x
  2. Step 2: Convert to fraction form
    283,987.40/391,832.71 = 173,578.10/x
  3. Step 3: Cross multiply
    283,987.40x = 391,832.71 × 173,578.10
  4. Step 4: Simplify right side
    283,987.40x = 68,013,574,926.54
  5. Step 5: Solve for x
    x = 68,013,574,926.54/283,987.40
  6. Step 6: Final answer
    x = 239,495.05

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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.