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Finding the Fourth Proportional to 484,719.82, 668,811.96 and 280,697.32

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Solution

The fourth proportional to 484,719.82, 668,811.96 and 280,697.32 is: 387,303.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,719.82 : 668,811.96 = 280,697.32 : x
  2. Step 2: Convert to fraction form
    484,719.82/668,811.96 = 280,697.32/x
  3. Step 3: Cross multiply
    484,719.82x = 668,811.96 × 280,697.32
  4. Step 4: Simplify right side
    484,719.82x = 187,733,724,755.95
  5. Step 5: Solve for x
    x = 187,733,724,755.95/484,719.82
  6. Step 6: Final answer
    x = 387,303.59

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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.