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Finding the Fourth Proportional to 499,966.72, 689,956.32 and 273,611.68

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Solution

The fourth proportional to 499,966.72, 689,956.32 and 273,611.68 is: 377,585.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,966.72 : 689,956.32 = 273,611.68 : x
  2. Step 2: Convert to fraction form
    499,966.72/689,956.32 = 273,611.68/x
  3. Step 3: Cross multiply
    499,966.72x = 689,956.32 × 273,611.68
  4. Step 4: Simplify right side
    499,966.72x = 188,780,107,841.82
  5. Step 5: Solve for x
    x = 188,780,107,841.82/499,966.72
  6. Step 6: Final answer
    x = 377,585.35

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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.