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Finding the Fourth Proportional to 371,560.96, 512,760 and 210,411.64

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Solution

The fourth proportional to 371,560.96, 512,760 and 210,411.64 is: 290,371.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,560.96 : 512,760 = 210,411.64 : x
  2. Step 2: Convert to fraction form
    371,560.96/512,760 = 210,411.64/x
  3. Step 3: Cross multiply
    371,560.96x = 512,760 × 210,411.64
  4. Step 4: Simplify right side
    371,560.96x = 107,890,672,526.40
  5. Step 5: Solve for x
    x = 107,890,672,526.40/371,560.96
  6. Step 6: Final answer
    x = 290,371.39

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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.