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Finding the Fourth Proportional to 371,261.52, 512,312.52 and 218,305.92

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Solution

The fourth proportional to 371,261.52, 512,312.52 and 218,305.92 is: 301,245.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,261.52 : 512,312.52 = 218,305.92 : x
  2. Step 2: Convert to fraction form
    371,261.52/512,312.52 = 218,305.92/x
  3. Step 3: Cross multiply
    371,261.52x = 512,312.52 × 218,305.92
  4. Step 4: Simplify right side
    371,261.52x = 111,840,856,006.12
  5. Step 5: Solve for x
    x = 111,840,856,006.12/371,261.52
  6. Step 6: Final answer
    x = 301,245.48

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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.