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Finding the Fourth Proportional to 371,425, 512,585.94 and 218,471.08

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Solution

The fourth proportional to 371,425, 512,585.94 and 218,471.08 is: 301,501.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,425 : 512,585.94 = 218,471.08 : x
  2. Step 2: Convert to fraction form
    371,425/512,585.94 = 218,471.08/x
  3. Step 3: Cross multiply
    371,425x = 512,585.94 × 218,471.08
  4. Step 4: Simplify right side
    371,425x = 111,985,203,904.62
  5. Step 5: Solve for x
    x = 111,985,203,904.62/371,425
  6. Step 6: Final answer
    x = 301,501.52

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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.