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Finding the Fourth Proportional to 373,149.15, 514,940.13 and 209,805.81

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Solution

The fourth proportional to 373,149.15, 514,940.13 and 209,805.81 is: 289,528.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,149.15 : 514,940.13 = 209,805.81 : x
  2. Step 2: Convert to fraction form
    373,149.15/514,940.13 = 209,805.81/x
  3. Step 3: Cross multiply
    373,149.15x = 514,940.13 × 209,805.81
  4. Step 4: Simplify right side
    373,149.15x = 108,037,431,076.16
  5. Step 5: Solve for x
    x = 108,037,431,076.16/373,149.15
  6. Step 6: Final answer
    x = 289,528.81

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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.