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Finding the Fourth Proportional to 243,020.70, 340,578.90 and 243,020.70

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Solution

The fourth proportional to 243,020.70, 340,578.90 and 243,020.70 is: 340,578.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,020.70 : 340,578.90 = 243,020.70 : x
  2. Step 2: Convert to fraction form
    243,020.70/340,578.90 = 243,020.70/x
  3. Step 3: Cross multiply
    243,020.70x = 340,578.90 × 243,020.70
  4. Step 4: Simplify right side
    243,020.70x = 82,767,722,683.23
  5. Step 5: Solve for x
    x = 82,767,722,683.23/243,020.70
  6. Step 6: Final answer
    x = 340,578.90

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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.