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Finding the Fourth Proportional to 486,703.60, 671,643.84 and 271,846.78

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Solution

The fourth proportional to 486,703.60, 671,643.84 and 271,846.78 is: 375,144.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,703.60 : 671,643.84 = 271,846.78 : x
  2. Step 2: Convert to fraction form
    486,703.60/671,643.84 = 271,846.78/x
  3. Step 3: Cross multiply
    486,703.60x = 671,643.84 × 271,846.78
  4. Step 4: Simplify right side
    486,703.60x = 182,584,215,210.84
  5. Step 5: Solve for x
    x = 182,584,215,210.84/486,703.60
  6. Step 6: Final answer
    x = 375,144.58

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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.