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Finding the Fourth Proportional to 448,353.60, 672,530.40 and 199,060.80

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Solution

The fourth proportional to 448,353.60, 672,530.40 and 199,060.80 is: 298,591.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,353.60 : 672,530.40 = 199,060.80 : x
  2. Step 2: Convert to fraction form
    448,353.60/672,530.40 = 199,060.80/x
  3. Step 3: Cross multiply
    448,353.60x = 672,530.40 × 199,060.80
  4. Step 4: Simplify right side
    448,353.60x = 133,874,439,448.32
  5. Step 5: Solve for x
    x = 133,874,439,448.32/448,353.60
  6. Step 6: Final answer
    x = 298,591.20

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Similar ratio
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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.