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Finding the Fourth Proportional to 325,905.70, 488,858.55 and 211,744.30

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Solution

The fourth proportional to 325,905.70, 488,858.55 and 211,744.30 is: 317,616.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,905.70 : 488,858.55 = 211,744.30 : x
  2. Step 2: Convert to fraction form
    325,905.70/488,858.55 = 211,744.30/x
  3. Step 3: Cross multiply
    325,905.70x = 488,858.55 × 211,744.30
  4. Step 4: Simplify right side
    325,905.70x = 103,513,011,468.77
  5. Step 5: Solve for x
    x = 103,513,011,468.77/325,905.70
  6. Step 6: Final answer
    x = 317,616.45

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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.