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Finding the Fourth Proportional to 248,638.86, 343,162.78 and 146,689.25

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Solution

The fourth proportional to 248,638.86, 343,162.78 and 146,689.25 is: 202,455.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,638.86 : 343,162.78 = 146,689.25 : x
  2. Step 2: Convert to fraction form
    248,638.86/343,162.78 = 146,689.25/x
  3. Step 3: Cross multiply
    248,638.86x = 343,162.78 × 146,689.25
  4. Step 4: Simplify right side
    248,638.86x = 50,338,288,743.58
  5. Step 5: Solve for x
    x = 50,338,288,743.58/248,638.86
  6. Step 6: Final answer
    x = 202,455.44

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1.5x scale

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.