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Finding the Fourth Proportional to 426,499.92, 639,750.64 and 110,956.32

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Solution

The fourth proportional to 426,499.92, 639,750.64 and 110,956.32 is: 166,434.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,499.92 : 639,750.64 = 110,956.32 : x
  2. Step 2: Convert to fraction form
    426,499.92/639,750.64 = 110,956.32/x
  3. Step 3: Cross multiply
    426,499.92x = 639,750.64 × 110,956.32
  4. Step 4: Simplify right side
    426,499.92x = 70,984,376,732.04
  5. Step 5: Solve for x
    x = 70,984,376,732.04/426,499.92
  6. Step 6: Final answer
    x = 166,434.68

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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.