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Finding the Fourth Proportional to 418,120.59, 577,090.44 and 248,321.91

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Solution

The fourth proportional to 418,120.59, 577,090.44 and 248,321.91 is: 342,734.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,120.59 : 577,090.44 = 248,321.91 : x
  2. Step 2: Convert to fraction form
    418,120.59/577,090.44 = 248,321.91/x
  3. Step 3: Cross multiply
    418,120.59x = 577,090.44 × 248,321.91
  4. Step 4: Simplify right side
    418,120.59x = 143,304,200,303.54
  5. Step 5: Solve for x
    x = 143,304,200,303.54/418,120.59
  6. Step 6: Final answer
    x = 342,734.14

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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.