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Finding the Fourth Proportional to 372,611.64, 514,271.13 and 219,640.75

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Solution

The fourth proportional to 372,611.64, 514,271.13 and 219,640.75 is: 303,143.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,611.64 : 514,271.13 = 219,640.75 : x
  2. Step 2: Convert to fraction form
    372,611.64/514,271.13 = 219,640.75/x
  3. Step 3: Cross multiply
    372,611.64x = 514,271.13 × 219,640.75
  4. Step 4: Simplify right side
    372,611.64x = 112,954,894,587.22
  5. Step 5: Solve for x
    x = 112,954,894,587.22/372,611.64
  6. Step 6: Final answer
    x = 303,143.76

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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.