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Finding the Fourth Proportional to 371,529.08, 512,712.08 and 210,415.44

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Solution

The fourth proportional to 371,529.08, 512,712.08 and 210,415.44 is: 290,374.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,529.08 : 512,712.08 = 210,415.44 : x
  2. Step 2: Convert to fraction form
    371,529.08/512,712.08 = 210,415.44/x
  3. Step 3: Cross multiply
    371,529.08x = 512,712.08 × 210,415.44
  4. Step 4: Simplify right side
    371,529.08x = 107,882,537,906.52
  5. Step 5: Solve for x
    x = 107,882,537,906.52/371,529.08
  6. Step 6: Final answer
    x = 290,374.41

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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.