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Finding the Fourth Proportional to 248,917, 343,531.38 and 153,421.24

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Solution

The fourth proportional to 248,917, 343,531.38 and 153,421.24 is: 211,737.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,917 : 343,531.38 = 153,421.24 : x
  2. Step 2: Convert to fraction form
    248,917/343,531.38 = 153,421.24/x
  3. Step 3: Cross multiply
    248,917x = 343,531.38 × 153,421.24
  4. Step 4: Simplify right side
    248,917x = 52,705,010,298.51
  5. Step 5: Solve for x
    x = 52,705,010,298.51/248,917
  6. Step 6: Final answer
    x = 211,737.29

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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.