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Finding the Fourth Proportional to 371,179.38, 512,199.38 and 218,223.84

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Solution

The fourth proportional to 371,179.38, 512,199.38 and 218,223.84 is: 301,132.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,179.38 : 512,199.38 = 218,223.84 : x
  2. Step 2: Convert to fraction form
    371,179.38/512,199.38 = 218,223.84/x
  3. Step 3: Cross multiply
    371,179.38x = 512,199.38 × 218,223.84
  4. Step 4: Simplify right side
    371,179.38x = 111,774,115,549.22
  5. Step 5: Solve for x
    x = 111,774,115,549.22/371,179.38
  6. Step 6: Final answer
    x = 301,132.34

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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.