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Finding the Fourth Proportional to 448,748.88, 673,118.13 and 128,908.59

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Solution

The fourth proportional to 448,748.88, 673,118.13 and 128,908.59 is: 193,361.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,748.88 : 673,118.13 = 128,908.59 : x
  2. Step 2: Convert to fraction form
    448,748.88/673,118.13 = 128,908.59/x
  3. Step 3: Cross multiply
    448,748.88x = 673,118.13 × 128,908.59
  4. Step 4: Simplify right side
    448,748.88x = 86,770,709,041.74
  5. Step 5: Solve for x
    x = 86,770,709,041.74/448,748.88
  6. Step 6: Final answer
    x = 193,361.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.