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Finding the Fourth Proportional to 371,300.31, 512,396.08 and 210,186.49

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Solution

The fourth proportional to 371,300.31, 512,396.08 and 210,186.49 is: 290,058.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,300.31 : 512,396.08 = 210,186.49 : x
  2. Step 2: Convert to fraction form
    371,300.31/512,396.08 = 210,186.49/x
  3. Step 3: Cross multiply
    371,300.31x = 512,396.08 × 210,186.49
  4. Step 4: Simplify right side
    371,300.31x = 107,698,733,544.96
  5. Step 5: Solve for x
    x = 107,698,733,544.96/371,300.31
  6. Step 6: Final answer
    x = 290,058.30

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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.