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Finding the Fourth Proportional to 371,701.11, 512,930.98 and 210,552.90

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Solution

The fourth proportional to 371,701.11, 512,930.98 and 210,552.90 is: 290,553.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,701.11 : 512,930.98 = 210,552.90 : x
  2. Step 2: Convert to fraction form
    371,701.11/512,930.98 = 210,552.90/x
  3. Step 3: Cross multiply
    371,701.11x = 512,930.98 × 210,552.90
  4. Step 4: Simplify right side
    371,701.11x = 107,999,105,338.84
  5. Step 5: Solve for x
    x = 107,999,105,338.84/371,701.11
  6. Step 6: Final answer
    x = 290,553.63

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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.