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Finding the Fourth Proportional to 446,490.54, 669,741.03 and 130,953.78

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Solution

The fourth proportional to 446,490.54, 669,741.03 and 130,953.78 is: 196,432.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,490.54 : 669,741.03 = 130,953.78 : x
  2. Step 2: Convert to fraction form
    446,490.54/669,741.03 = 130,953.78/x
  3. Step 3: Cross multiply
    446,490.54x = 669,741.03 × 130,953.78
  4. Step 4: Simplify right side
    446,490.54x = 87,705,119,499.59
  5. Step 5: Solve for x
    x = 87,705,119,499.59/446,490.54
  6. Step 6: Final answer
    x = 196,432.20

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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.