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Finding the Fourth Proportional to 418,359.12, 577,419.56 and 248,560.56

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Solution

The fourth proportional to 418,359.12, 577,419.56 and 248,560.56 is: 343,063.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,359.12 : 577,419.56 = 248,560.56 : x
  2. Step 2: Convert to fraction form
    418,359.12/577,419.56 = 248,560.56/x
  3. Step 3: Cross multiply
    418,359.12x = 577,419.56 × 248,560.56
  4. Step 4: Simplify right side
    418,359.12x = 143,523,729,188.55
  5. Step 5: Solve for x
    x = 143,523,729,188.55/418,359.12
  6. Step 6: Final answer
    x = 343,063.46

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1.5x scale

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.