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Finding the Fourth Proportional to 499,648.40, 749,571.18 and 144,665.36

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Solution

The fourth proportional to 499,648.40, 749,571.18 and 144,665.36 is: 217,026.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,648.40 : 749,571.18 = 144,665.36 : x
  2. Step 2: Convert to fraction form
    499,648.40/749,571.18 = 144,665.36/x
  3. Step 3: Cross multiply
    499,648.40x = 749,571.18 × 144,665.36
  4. Step 4: Simplify right side
    499,648.40x = 108,436,984,600.33
  5. Step 5: Solve for x
    x = 108,436,984,600.33/499,648.40
  6. Step 6: Final answer
    x = 217,026.58

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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.