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Finding the Fourth Proportional to 490,772.13, 677,258.33 and 272,978.52

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Solution

The fourth proportional to 490,772.13, 677,258.33 and 272,978.52 is: 376,706.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,772.13 : 677,258.33 = 272,978.52 : x
  2. Step 2: Convert to fraction form
    490,772.13/677,258.33 = 272,978.52/x
  3. Step 3: Cross multiply
    490,772.13x = 677,258.33 × 272,978.52
  4. Step 4: Simplify right side
    490,772.13x = 184,876,975,216.18
  5. Step 5: Solve for x
    x = 184,876,975,216.18/490,772.13
  6. Step 6: Final answer
    x = 376,706.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.