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Finding the Fourth Proportional to 479,309.88, 661,468.74 and 275,424.76

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Solution

The fourth proportional to 479,309.88, 661,468.74 and 275,424.76 is: 380,098.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,309.88 : 661,468.74 = 275,424.76 : x
  2. Step 2: Convert to fraction form
    479,309.88/661,468.74 = 275,424.76/x
  3. Step 3: Cross multiply
    479,309.88x = 661,468.74 × 275,424.76
  4. Step 4: Simplify right side
    479,309.88x = 182,184,868,018.28
  5. Step 5: Solve for x
    x = 182,184,868,018.28/479,309.88
  6. Step 6: Final answer
    x = 380,098.29

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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.