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Finding the Fourth Proportional to 418,642.60, 577,523.66 and 248,756.44

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Solution

The fourth proportional to 418,642.60, 577,523.66 and 248,756.44 is: 343,163.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,642.60 : 577,523.66 = 248,756.44 : x
  2. Step 2: Convert to fraction form
    418,642.60/577,523.66 = 248,756.44/x
  3. Step 3: Cross multiply
    418,642.60x = 577,523.66 × 248,756.44
  4. Step 4: Simplify right side
    418,642.60x = 143,662,729,677.37
  5. Step 5: Solve for x
    x = 143,662,729,677.37/418,642.60
  6. Step 6: Final answer
    x = 343,163.19

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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.