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Finding the Fourth Proportional to 643,454.48, 965,446.60 and 223,025.60

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Solution

The fourth proportional to 643,454.48, 965,446.60 and 223,025.60 is: 334,630.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,454.48 : 965,446.60 = 223,025.60 : x
  2. Step 2: Convert to fraction form
    643,454.48/965,446.60 = 223,025.60/x
  3. Step 3: Cross multiply
    643,454.48x = 965,446.60 × 223,025.60
  4. Step 4: Simplify right side
    643,454.48x = 215,319,307,232.96
  5. Step 5: Solve for x
    x = 215,319,307,232.96/643,454.48
  6. Step 6: Final answer
    x = 334,630.21

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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.