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Finding the Fourth Proportional to 371,684.72, 512,937.96 and 210,544.40

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Solution

The fourth proportional to 371,684.72, 512,937.96 and 210,544.40 is: 290,558.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,684.72 : 512,937.96 = 210,544.40 : x
  2. Step 2: Convert to fraction form
    371,684.72/512,937.96 = 210,544.40/x
  3. Step 3: Cross multiply
    371,684.72x = 512,937.96 × 210,544.40
  4. Step 4: Simplify right side
    371,684.72x = 107,996,215,025.42
  5. Step 5: Solve for x
    x = 107,996,215,025.42/371,684.72
  6. Step 6: Final answer
    x = 290,558.66

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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.