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Finding the Fourth Proportional to 411,952.20, 617,150.70 and 211,590.60

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Solution

The fourth proportional to 411,952.20, 617,150.70 and 211,590.60 is: 316,986.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,952.20 : 617,150.70 = 211,590.60 : x
  2. Step 2: Convert to fraction form
    411,952.20/617,150.70 = 211,590.60/x
  3. Step 3: Cross multiply
    411,952.20x = 617,150.70 × 211,590.60
  4. Step 4: Simplify right side
    411,952.20x = 130,583,286,903.42
  5. Step 5: Solve for x
    x = 130,583,286,903.42/411,952.20
  6. Step 6: Final answer
    x = 316,986.50

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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.