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Finding the Fourth Proportional to 375,838.72, 518,661.48 and 214,715.20

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Solution

The fourth proportional to 375,838.72, 518,661.48 and 214,715.20 is: 296,309.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,838.72 : 518,661.48 = 214,715.20 : x
  2. Step 2: Convert to fraction form
    375,838.72/518,661.48 = 214,715.20/x
  3. Step 3: Cross multiply
    375,838.72x = 518,661.48 × 214,715.20
  4. Step 4: Simplify right side
    375,838.72x = 111,364,503,410.50
  5. Step 5: Solve for x
    x = 111,364,503,410.50/375,838.72
  6. Step 6: Final answer
    x = 296,309.29

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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.