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Finding the Fourth Proportional to 490,897.22, 677,442.21 and 276,035.41

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Solution

The fourth proportional to 490,897.22, 677,442.21 and 276,035.41 is: 380,931.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,897.22 : 677,442.21 = 276,035.41 : x
  2. Step 2: Convert to fraction form
    490,897.22/677,442.21 = 276,035.41/x
  3. Step 3: Cross multiply
    490,897.22x = 677,442.21 × 276,035.41
  4. Step 4: Simplify right side
    490,897.22x = 186,998,038,188.66
  5. Step 5: Solve for x
    x = 186,998,038,188.66/490,897.22
  6. Step 6: Final answer
    x = 380,931.14

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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.