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Finding the Fourth Proportional to 371,700.11, 512,929.60 and 210,551.90

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Solution

The fourth proportional to 371,700.11, 512,929.60 and 210,551.90 is: 290,552.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,700.11 : 512,929.60 = 210,551.90 : x
  2. Step 2: Convert to fraction form
    371,700.11/512,929.60 = 210,551.90/x
  3. Step 3: Cross multiply
    371,700.11x = 512,929.60 × 210,551.90
  4. Step 4: Simplify right side
    371,700.11x = 107,998,298,755.21
  5. Step 5: Solve for x
    x = 107,998,298,755.21/371,700.11
  6. Step 6: Final answer
    x = 290,552.24

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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.