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Finding the Fourth Proportional to 611,173.56, 843,379.62 and 339,228.48

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Solution

The fourth proportional to 611,173.56, 843,379.62 and 339,228.48 is: 468,113.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,173.56 : 843,379.62 = 339,228.48 : x
  2. Step 2: Convert to fraction form
    611,173.56/843,379.62 = 339,228.48/x
  3. Step 3: Cross multiply
    611,173.56x = 843,379.62 × 339,228.48
  4. Step 4: Simplify right side
    611,173.56x = 286,098,386,555.58
  5. Step 5: Solve for x
    x = 286,098,386,555.58/611,173.56
  6. Step 6: Final answer
    x = 468,113.16

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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.