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Finding the Fourth Proportional to 217,210,006.65, 325,815,009.98 and 217,210,006.65

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Solution

The fourth proportional to 217,210,006.65, 325,815,009.98 and 217,210,006.65 is: 325,815,009.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,210,006.65 : 325,815,009.98 = 217,210,006.65 : x
  2. Step 2: Convert to fraction form
    217,210,006.65/325,815,009.98 = 217,210,006.65/x
  3. Step 3: Cross multiply
    217,210,006.65x = 325,815,009.98 × 217,210,006.65
  4. Step 4: Simplify right side
    217,210,006.65x = 70,770,280,484,425,624
  5. Step 5: Solve for x
    x = 70,770,280,484,425,624/217,210,006.65
  6. Step 6: Final answer
    x = 325,815,009.98

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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.