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Finding the Fourth Proportional to 641,448.60, 962,259.30 and 220,853.40

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Solution

The fourth proportional to 641,448.60, 962,259.30 and 220,853.40 is: 331,309.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,448.60 : 962,259.30 = 220,853.40 : x
  2. Step 2: Convert to fraction form
    641,448.60/962,259.30 = 220,853.40/x
  3. Step 3: Cross multiply
    641,448.60x = 962,259.30 × 220,853.40
  4. Step 4: Simplify right side
    641,448.60x = 212,518,238,086.62
  5. Step 5: Solve for x
    x = 212,518,238,086.62/641,448.60
  6. Step 6: Final answer
    x = 331,309.85

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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.