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Finding the Fourth Proportional to 289,765.74, 399,876.48 and 162,441.34

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Solution

The fourth proportional to 289,765.74, 399,876.48 and 162,441.34 is: 224,168.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,765.74 : 399,876.48 = 162,441.34 : x
  2. Step 2: Convert to fraction form
    289,765.74/399,876.48 = 162,441.34/x
  3. Step 3: Cross multiply
    289,765.74x = 399,876.48 × 162,441.34
  4. Step 4: Simplify right side
    289,765.74x = 64,956,471,245.68
  5. Step 5: Solve for x
    x = 64,956,471,245.68/289,765.74
  6. Step 6: Final answer
    x = 224,168.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.