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Finding the Fourth Proportional to 272,971.40, 408,873.90 and 226,315.40

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Solution

The fourth proportional to 272,971.40, 408,873.90 and 226,315.40 is: 338,989.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,971.40 : 408,873.90 = 226,315.40 : x
  2. Step 2: Convert to fraction form
    272,971.40/408,873.90 = 226,315.40/x
  3. Step 3: Cross multiply
    272,971.40x = 408,873.90 × 226,315.40
  4. Step 4: Simplify right side
    272,971.40x = 92,534,460,228.06
  5. Step 5: Solve for x
    x = 92,534,460,228.06/272,971.40
  6. Step 6: Final answer
    x = 338,989.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.