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Finding the Fourth Proportional to 298,471.64, 447,789.40 and 88,109.51

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Solution

The fourth proportional to 298,471.64, 447,789.40 and 88,109.51 is: 132,188.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,471.64 : 447,789.40 = 88,109.51 : x
  2. Step 2: Convert to fraction form
    298,471.64/447,789.40 = 88,109.51/x
  3. Step 3: Cross multiply
    298,471.64x = 447,789.40 × 88,109.51
  4. Step 4: Simplify right side
    298,471.64x = 39,454,502,157.97
  5. Step 5: Solve for x
    x = 39,454,502,157.97/298,471.64
  6. Step 6: Final answer
    x = 132,188.45

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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.