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Finding the Fourth Proportional to 375,628.10, 518,309.43 and 212,224.98

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Solution

The fourth proportional to 375,628.10, 518,309.43 and 212,224.98 is: 292,838.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,628.10 : 518,309.43 = 212,224.98 : x
  2. Step 2: Convert to fraction form
    375,628.10/518,309.43 = 212,224.98/x
  3. Step 3: Cross multiply
    375,628.10x = 518,309.43 × 212,224.98
  4. Step 4: Simplify right side
    375,628.10x = 109,998,208,415.56
  5. Step 5: Solve for x
    x = 109,998,208,415.56/375,628.10
  6. Step 6: Final answer
    x = 292,838.07

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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.