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Finding the Fourth Proportional to 486,118.56, 670,976.16 and 282,233.34

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Solution

The fourth proportional to 486,118.56, 670,976.16 and 282,233.34 is: 389,558.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,118.56 : 670,976.16 = 282,233.34 : x
  2. Step 2: Convert to fraction form
    486,118.56/670,976.16 = 282,233.34/x
  3. Step 3: Cross multiply
    486,118.56x = 670,976.16 × 282,233.34
  4. Step 4: Simplify right side
    486,118.56x = 189,371,842,697.17
  5. Step 5: Solve for x
    x = 189,371,842,697.17/486,118.56
  6. Step 6: Final answer
    x = 389,558.96

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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.