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Finding the Fourth Proportional to 486,716.64, 671,602.56 and 271,829.28

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Solution

The fourth proportional to 486,716.64, 671,602.56 and 271,829.28 is: 375,087.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,716.64 : 671,602.56 = 271,829.28 : x
  2. Step 2: Convert to fraction form
    486,716.64/671,602.56 = 271,829.28/x
  3. Step 3: Cross multiply
    486,716.64x = 671,602.56 × 271,829.28
  4. Step 4: Simplify right side
    486,716.64x = 182,561,240,330.96
  5. Step 5: Solve for x
    x = 182,561,240,330.96/486,716.64
  6. Step 6: Final answer
    x = 375,087.32

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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.