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Finding the Fourth Proportional to 313,488.12, 432,745.98 and 211,651.50

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Solution

The fourth proportional to 313,488.12, 432,745.98 and 211,651.50 is: 292,168.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,488.12 : 432,745.98 = 211,651.50 : x
  2. Step 2: Convert to fraction form
    313,488.12/432,745.98 = 211,651.50/x
  3. Step 3: Cross multiply
    313,488.12x = 432,745.98 × 211,651.50
  4. Step 4: Simplify right side
    313,488.12x = 91,591,335,785.97
  5. Step 5: Solve for x
    x = 91,591,335,785.97/313,488.12
  6. Step 6: Final answer
    x = 292,168.44

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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.