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Finding the Fourth Proportional to 472,238.77, 651,938.70 and 379,351.48

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Solution

The fourth proportional to 472,238.77, 651,938.70 and 379,351.48 is: 523,705.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,238.77 : 651,938.70 = 379,351.48 : x
  2. Step 2: Convert to fraction form
    472,238.77/651,938.70 = 379,351.48/x
  3. Step 3: Cross multiply
    472,238.77x = 651,938.70 × 379,351.48
  4. Step 4: Simplify right side
    472,238.77x = 247,313,910,714.28
  5. Step 5: Solve for x
    x = 247,313,910,714.28/472,238.77
  6. Step 6: Final answer
    x = 523,705.22

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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.