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Finding the Fourth Proportional to 205,211.70, 307,817.55 and 205,211.70

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Solution

The fourth proportional to 205,211.70, 307,817.55 and 205,211.70 is: 307,817.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,211.70 : 307,817.55 = 205,211.70 : x
  2. Step 2: Convert to fraction form
    205,211.70/307,817.55 = 205,211.70/x
  3. Step 3: Cross multiply
    205,211.70x = 307,817.55 × 205,211.70
  4. Step 4: Simplify right side
    205,211.70x = 63,167,762,725.34
  5. Step 5: Solve for x
    x = 63,167,762,725.34/205,211.70
  6. Step 6: Final answer
    x = 307,817.55

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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.