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Finding the Fourth Proportional to 371,636.76, 512,847 and 210,506.70

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Solution

The fourth proportional to 371,636.76, 512,847 and 210,506.70 is: 290,492.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,636.76 : 512,847 = 210,506.70 : x
  2. Step 2: Convert to fraction form
    371,636.76/512,847 = 210,506.70/x
  3. Step 3: Cross multiply
    371,636.76x = 512,847 × 210,506.70
  4. Step 4: Simplify right side
    371,636.76x = 107,957,729,574.90
  5. Step 5: Solve for x
    x = 107,957,729,574.90/371,636.76
  6. Step 6: Final answer
    x = 290,492.60

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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.