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Finding the Fourth Proportional to 626,875.60, 940,464.60 and 206,129.20

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Solution

The fourth proportional to 626,875.60, 940,464.60 and 206,129.20 is: 309,243.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,875.60 : 940,464.60 = 206,129.20 : x
  2. Step 2: Convert to fraction form
    626,875.60/940,464.60 = 206,129.20/x
  3. Step 3: Cross multiply
    626,875.60x = 940,464.60 × 206,129.20
  4. Step 4: Simplify right side
    626,875.60x = 193,857,215,626.32
  5. Step 5: Solve for x
    x = 193,857,215,626.32/626,875.60
  6. Step 6: Final answer
    x = 309,243.52

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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.