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Finding the Fourth Proportional to 450,005.40, 674,910.90 and 197,285.40

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Solution

The fourth proportional to 450,005.40, 674,910.90 and 197,285.40 is: 295,885.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,005.40 : 674,910.90 = 197,285.40 : x
  2. Step 2: Convert to fraction form
    450,005.40/674,910.90 = 197,285.40/x
  3. Step 3: Cross multiply
    450,005.40x = 674,910.90 × 197,285.40
  4. Step 4: Simplify right side
    450,005.40x = 133,150,066,870.86
  5. Step 5: Solve for x
    x = 133,150,066,870.86/450,005.40
  6. Step 6: Final answer
    x = 295,885.49

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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.