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Finding the Fourth Proportional to 272,972.40, 408,875.40 and 226,316.40

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Solution

The fourth proportional to 272,972.40, 408,875.40 and 226,316.40 is: 338,991.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,972.40 : 408,875.40 = 226,316.40 : x
  2. Step 2: Convert to fraction form
    272,972.40/408,875.40 = 226,316.40/x
  3. Step 3: Cross multiply
    272,972.40x = 408,875.40 × 226,316.40
  4. Step 4: Simplify right side
    272,972.40x = 92,535,208,576.56
  5. Step 5: Solve for x
    x = 92,535,208,576.56/272,972.40
  6. Step 6: Final answer
    x = 338,991.08

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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.