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Finding the Fourth Proportional to 448,342.56, 618,716.88 and 247,145.76

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Solution

The fourth proportional to 448,342.56, 618,716.88 and 247,145.76 is: 341,063.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,342.56 : 618,716.88 = 247,145.76 : x
  2. Step 2: Convert to fraction form
    448,342.56/618,716.88 = 247,145.76/x
  3. Step 3: Cross multiply
    448,342.56x = 618,716.88 × 247,145.76
  4. Step 4: Simplify right side
    448,342.56x = 152,913,253,532.43
  5. Step 5: Solve for x
    x = 152,913,253,532.43/448,342.56
  6. Step 6: Final answer
    x = 341,063.43

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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.