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Finding the Fourth Proportional to 298,065.72, 447,098.58 and 87,703.73

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Solution

The fourth proportional to 298,065.72, 447,098.58 and 87,703.73 is: 131,555.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,065.72 : 447,098.58 = 87,703.73 : x
  2. Step 2: Convert to fraction form
    298,065.72/447,098.58 = 87,703.73/x
  3. Step 3: Cross multiply
    298,065.72x = 447,098.58 × 87,703.73
  4. Step 4: Simplify right side
    298,065.72x = 39,212,210,908.21
  5. Step 5: Solve for x
    x = 39,212,210,908.21/298,065.72
  6. Step 6: Final answer
    x = 131,555.59

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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.