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Finding the Fourth Proportional to 371,320.95, 512,385.50 and 210,147.94

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Solution

The fourth proportional to 371,320.95, 512,385.50 and 210,147.94 is: 289,982.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,320.95 : 512,385.50 = 210,147.94 : x
  2. Step 2: Convert to fraction form
    371,320.95/512,385.50 = 210,147.94/x
  3. Step 3: Cross multiply
    371,320.95x = 512,385.50 × 210,147.94
  4. Step 4: Simplify right side
    371,320.95x = 107,676,757,310.87
  5. Step 5: Solve for x
    x = 107,676,757,310.87/371,320.95
  6. Step 6: Final answer
    x = 289,982.98

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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.