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Finding the Fourth Proportional to 371,714.75, 512,991.72 and 210,571.12

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Solution

The fourth proportional to 371,714.75, 512,991.72 and 210,571.12 is: 290,602.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,714.75 : 512,991.72 = 210,571.12 : x
  2. Step 2: Convert to fraction form
    371,714.75/512,991.72 = 210,571.12/x
  3. Step 3: Cross multiply
    371,714.75x = 512,991.72 × 210,571.12
  4. Step 4: Simplify right side
    371,714.75x = 108,021,239,933.46
  5. Step 5: Solve for x
    x = 108,021,239,933.46/371,714.75
  6. Step 6: Final answer
    x = 290,602.51

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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.