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Finding the Fourth Proportional to 248,854.28, 343,207.38 and 210,281

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Solution

The fourth proportional to 248,854.28, 343,207.38 and 210,281 is: 290,009.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,854.28 : 343,207.38 = 210,281 : x
  2. Step 2: Convert to fraction form
    248,854.28/343,207.38 = 210,281/x
  3. Step 3: Cross multiply
    248,854.28x = 343,207.38 × 210,281
  4. Step 4: Simplify right side
    248,854.28x = 72,169,991,073.78
  5. Step 5: Solve for x
    x = 72,169,991,073.78/248,854.28
  6. Step 6: Final answer
    x = 290,009.04

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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.