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Finding the Fourth Proportional to 299,715.20, 450,091.20 and 194,998.40

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Solution

The fourth proportional to 299,715.20, 450,091.20 and 194,998.40 is: 292,834.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,715.20 : 450,091.20 = 194,998.40 : x
  2. Step 2: Convert to fraction form
    299,715.20/450,091.20 = 194,998.40/x
  3. Step 3: Cross multiply
    299,715.20x = 450,091.20 × 194,998.40
  4. Step 4: Simplify right side
    299,715.20x = 87,767,063,854.08
  5. Step 5: Solve for x
    x = 87,767,063,854.08/299,715.20
  6. Step 6: Final answer
    x = 292,834.88

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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.