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Finding the Fourth Proportional to 432,491.60, 648,670.88 and 144,308.39

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Solution

The fourth proportional to 432,491.60, 648,670.88 and 144,308.39 is: 216,440.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,491.60 : 648,670.88 = 144,308.39 : x
  2. Step 2: Convert to fraction form
    432,491.60/648,670.88 = 144,308.39/x
  3. Step 3: Cross multiply
    432,491.60x = 648,670.88 × 144,308.39
  4. Step 4: Simplify right side
    432,491.60x = 93,608,647,450.10
  5. Step 5: Solve for x
    x = 93,608,647,450.10/432,491.60
  6. Step 6: Final answer
    x = 216,440.38

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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.