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Finding the Fourth Proportional to 663,904.40, 996,245.40 and 243,222.80

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Solution

The fourth proportional to 663,904.40, 996,245.40 and 243,222.80 is: 364,976.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,904.40 : 996,245.40 = 243,222.80 : x
  2. Step 2: Convert to fraction form
    663,904.40/996,245.40 = 243,222.80/x
  3. Step 3: Cross multiply
    663,904.40x = 996,245.40 × 243,222.80
  4. Step 4: Simplify right side
    663,904.40x = 242,309,595,675.12
  5. Step 5: Solve for x
    x = 242,309,595,675.12/663,904.40
  6. Step 6: Final answer
    x = 364,976.64

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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.