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Finding the Fourth Proportional to 486,502.70, 671,373.48 and 271,642.64

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Solution

The fourth proportional to 486,502.70, 671,373.48 and 271,642.64 is: 374,866.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,502.70 : 671,373.48 = 271,642.64 : x
  2. Step 2: Convert to fraction form
    486,502.70/671,373.48 = 271,642.64/x
  3. Step 3: Cross multiply
    486,502.70x = 671,373.48 × 271,642.64
  4. Step 4: Simplify right side
    486,502.70x = 182,373,664,533.19
  5. Step 5: Solve for x
    x = 182,373,664,533.19/486,502.70
  6. Step 6: Final answer
    x = 374,866.71

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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.