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Finding the Fourth Proportional to 371,449.10, 512,571.75 and 210,267.20

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Solution

The fourth proportional to 371,449.10, 512,571.75 and 210,267.20 is: 290,152.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,449.10 : 512,571.75 = 210,267.20 : x
  2. Step 2: Convert to fraction form
    371,449.10/512,571.75 = 210,267.20/x
  3. Step 3: Cross multiply
    371,449.10x = 512,571.75 × 210,267.20
  4. Step 4: Simplify right side
    371,449.10x = 107,777,024,108.74
  5. Step 5: Solve for x
    x = 107,777,024,108.74/371,449.10
  6. Step 6: Final answer
    x = 290,152.88

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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.