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Finding the Fourth Proportional to 354,664.76, 488,865.48 and 239,901.49

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Solution

The fourth proportional to 354,664.76, 488,865.48 and 239,901.49 is: 330,677.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,664.76 : 488,865.48 = 239,901.49 : x
  2. Step 2: Convert to fraction form
    354,664.76/488,865.48 = 239,901.49/x
  3. Step 3: Cross multiply
    354,664.76x = 488,865.48 × 239,901.49
  4. Step 4: Simplify right side
    354,664.76x = 117,279,554,617.24
  5. Step 5: Solve for x
    x = 117,279,554,617.24/354,664.76
  6. Step 6: Final answer
    x = 330,677.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.