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Finding the Fourth Proportional to 430,470.64, 645,709.20 and 149,987.44

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Solution

The fourth proportional to 430,470.64, 645,709.20 and 149,987.44 is: 224,982.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,470.64 : 645,709.20 = 149,987.44 : x
  2. Step 2: Convert to fraction form
    430,470.64/645,709.20 = 149,987.44/x
  3. Step 3: Cross multiply
    430,470.64x = 645,709.20 × 149,987.44
  4. Step 4: Simplify right side
    430,470.64x = 96,848,269,892.45
  5. Step 5: Solve for x
    x = 96,848,269,892.45/430,470.64
  6. Step 6: Final answer
    x = 224,982.29

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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.