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Finding the Fourth Proportional to 202,810.60, 304,215.90 and 136,455.40

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Solution

The fourth proportional to 202,810.60, 304,215.90 and 136,455.40 is: 204,683.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,810.60 : 304,215.90 = 136,455.40 : x
  2. Step 2: Convert to fraction form
    202,810.60/304,215.90 = 136,455.40/x
  3. Step 3: Cross multiply
    202,810.60x = 304,215.90 × 136,455.40
  4. Step 4: Simplify right side
    202,810.60x = 41,511,902,320.86
  5. Step 5: Solve for x
    x = 41,511,902,320.86/202,810.60
  6. Step 6: Final answer
    x = 204,683.10

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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.