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Finding the Fourth Proportional to 375,340.31, 518,006.89 and 214,219.77

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Solution

The fourth proportional to 375,340.31, 518,006.89 and 214,219.77 is: 295,644.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,340.31 : 518,006.89 = 214,219.77 : x
  2. Step 2: Convert to fraction form
    375,340.31/518,006.89 = 214,219.77/x
  3. Step 3: Cross multiply
    375,340.31x = 518,006.89 × 214,219.77
  4. Step 4: Simplify right side
    375,340.31x = 110,967,316,834.22
  5. Step 5: Solve for x
    x = 110,967,316,834.22/375,340.31
  6. Step 6: Final answer
    x = 295,644.55

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1.5x scale

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.