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Finding the Fourth Proportional to 252,048.40, 378,072.60 and 228,720.40

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Solution

The fourth proportional to 252,048.40, 378,072.60 and 228,720.40 is: 343,080.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,048.40 : 378,072.60 = 228,720.40 : x
  2. Step 2: Convert to fraction form
    252,048.40/378,072.60 = 228,720.40/x
  3. Step 3: Cross multiply
    252,048.40x = 378,072.60 × 228,720.40
  4. Step 4: Simplify right side
    252,048.40x = 86,472,916,301.04
  5. Step 5: Solve for x
    x = 86,472,916,301.04/252,048.40
  6. Step 6: Final answer
    x = 343,080.60

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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.