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Finding the Fourth Proportional to 203,590.32, 305,406.40 and 70,470.36

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Solution

The fourth proportional to 203,590.32, 305,406.40 and 70,470.36 is: 105,712.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,590.32 : 305,406.40 = 70,470.36 : x
  2. Step 2: Convert to fraction form
    203,590.32/305,406.40 = 70,470.36/x
  3. Step 3: Cross multiply
    203,590.32x = 305,406.40 × 70,470.36
  4. Step 4: Simplify right side
    203,590.32x = 21,522,098,954.30
  5. Step 5: Solve for x
    x = 21,522,098,954.30/203,590.32
  6. Step 6: Final answer
    x = 105,712.78

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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.