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Finding the Fourth Proportional to 217,686,175.70, 305,621,580.40 and 217,686,175.70

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Solution

The fourth proportional to 217,686,175.70, 305,621,580.40 and 217,686,175.70 is: 305,621,580.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,686,175.70 : 305,621,580.40 = 217,686,175.70 : x
  2. Step 2: Convert to fraction form
    217,686,175.70/305,621,580.40 = 217,686,175.70/x
  3. Step 3: Cross multiply
    217,686,175.70x = 305,621,580.40 × 217,686,175.70
  4. Step 4: Simplify right side
    217,686,175.70x = 66,529,593,048,666,064
  5. Step 5: Solve for x
    x = 66,529,593,048,666,064/217,686,175.70
  6. Step 6: Final answer
    x = 305,621,580.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.