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Finding the Fourth Proportional to 272,048.40, 408,072.60 and 247,116.60

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Solution

The fourth proportional to 272,048.40, 408,072.60 and 247,116.60 is: 370,674.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,048.40 : 408,072.60 = 247,116.60 : x
  2. Step 2: Convert to fraction form
    272,048.40/408,072.60 = 247,116.60/x
  3. Step 3: Cross multiply
    272,048.40x = 408,072.60 × 247,116.60
  4. Step 4: Simplify right side
    272,048.40x = 100,841,513,465.16
  5. Step 5: Solve for x
    x = 100,841,513,465.16/272,048.40
  6. Step 6: Final answer
    x = 370,674.90

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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.