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Finding the Fourth Proportional to 485,107.40, 727,661.10 and 248,911.40

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Solution

The fourth proportional to 485,107.40, 727,661.10 and 248,911.40 is: 373,367.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,107.40 : 727,661.10 = 248,911.40 : x
  2. Step 2: Convert to fraction form
    485,107.40/727,661.10 = 248,911.40/x
  3. Step 3: Cross multiply
    485,107.40x = 727,661.10 × 248,911.40
  4. Step 4: Simplify right side
    485,107.40x = 181,123,143,126.54
  5. Step 5: Solve for x
    x = 181,123,143,126.54/485,107.40
  6. Step 6: Final answer
    x = 373,367.10

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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.