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Finding the Fourth Proportional to 664,713.20, 996,954.60 and 243,772.40

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Solution

The fourth proportional to 664,713.20, 996,954.60 and 243,772.40 is: 365,616.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,713.20 : 996,954.60 = 243,772.40 : x
  2. Step 2: Convert to fraction form
    664,713.20/996,954.60 = 243,772.40/x
  3. Step 3: Cross multiply
    664,713.20x = 996,954.60 × 243,772.40
  4. Step 4: Simplify right side
    664,713.20x = 243,030,015,533.04
  5. Step 5: Solve for x
    x = 243,030,015,533.04/664,713.20
  6. Step 6: Final answer
    x = 365,616.35

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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.