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Finding the Fourth Proportional to 486,038.28, 670,731.90 and 271,165.56

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Solution

The fourth proportional to 486,038.28, 670,731.90 and 271,165.56 is: 374,207.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,038.28 : 670,731.90 = 271,165.56 : x
  2. Step 2: Convert to fraction form
    486,038.28/670,731.90 = 271,165.56/x
  3. Step 3: Cross multiply
    486,038.28x = 670,731.90 × 271,165.56
  4. Step 4: Simplify right side
    486,038.28x = 181,879,391,273.36
  5. Step 5: Solve for x
    x = 181,879,391,273.36/486,038.28
  6. Step 6: Final answer
    x = 374,207.96

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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.