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Finding the Fourth Proportional to 418,733.80, 628,206.03 and 134,449.77

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Solution

The fourth proportional to 418,733.80, 628,206.03 and 134,449.77 is: 201,708.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,733.80 : 628,206.03 = 134,449.77 : x
  2. Step 2: Convert to fraction form
    418,733.80/628,206.03 = 134,449.77/x
  3. Step 3: Cross multiply
    418,733.80x = 628,206.03 × 134,449.77
  4. Step 4: Simplify right side
    418,733.80x = 84,462,158,601.89
  5. Step 5: Solve for x
    x = 84,462,158,601.89/418,733.80
  6. Step 6: Final answer
    x = 201,708.48

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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.