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Finding the Fourth Proportional to 322,490.60, 483,735.90 and 247,986.80

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Solution

The fourth proportional to 322,490.60, 483,735.90 and 247,986.80 is: 371,980.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,490.60 : 483,735.90 = 247,986.80 : x
  2. Step 2: Convert to fraction form
    322,490.60/483,735.90 = 247,986.80/x
  3. Step 3: Cross multiply
    322,490.60x = 483,735.90 × 247,986.80
  4. Step 4: Simplify right side
    322,490.60x = 119,960,117,886.12
  5. Step 5: Solve for x
    x = 119,960,117,886.12/322,490.60
  6. Step 6: Final answer
    x = 371,980.20

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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.