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Finding the Fourth Proportional to 298,425.56, 447,239.06 and 146,390.20

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Solution

The fourth proportional to 298,425.56, 447,239.06 and 146,390.20 is: 219,389.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,425.56 : 447,239.06 = 146,390.20 : x
  2. Step 2: Convert to fraction form
    298,425.56/447,239.06 = 146,390.20/x
  3. Step 3: Cross multiply
    298,425.56x = 447,239.06 × 146,390.20
  4. Step 4: Simplify right side
    298,425.56x = 65,471,415,441.21
  5. Step 5: Solve for x
    x = 65,471,415,441.21/298,425.56
  6. Step 6: Final answer
    x = 219,389.44

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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.