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Finding the Fourth Proportional to 418,405.56, 577,405.56 and 227,418.96

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Solution

The fourth proportional to 418,405.56, 577,405.56 and 227,418.96 is: 313,841.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,405.56 : 577,405.56 = 227,418.96 : x
  2. Step 2: Convert to fraction form
    418,405.56/577,405.56 = 227,418.96/x
  3. Step 3: Cross multiply
    418,405.56x = 577,405.56 × 227,418.96
  4. Step 4: Simplify right side
    418,405.56x = 131,312,971,953.42
  5. Step 5: Solve for x
    x = 131,312,971,953.42/418,405.56
  6. Step 6: Final answer
    x = 313,841.36

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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.