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Finding the Fourth Proportional to 611,960,269.92, 918,134,453.52 and 218,478,654.96

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Solution

The fourth proportional to 611,960,269.92, 918,134,453.52 and 218,478,654.96 is: 327,787,260.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,960,269.92 : 918,134,453.52 = 218,478,654.96 : x
  2. Step 2: Convert to fraction form
    611,960,269.92/918,134,453.52 = 218,478,654.96/x
  3. Step 3: Cross multiply
    611,960,269.92x = 918,134,453.52 × 218,478,654.96
  4. Step 4: Simplify right side
    611,960,269.92x = 200,592,780,477,484,256
  5. Step 5: Solve for x
    x = 200,592,780,477,484,256/611,960,269.92
  6. Step 6: Final answer
    x = 327,787,260.61

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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.