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Finding the Fourth Proportional to 486,283.76, 671,105.40 and 271,465.76

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Solution

The fourth proportional to 486,283.76, 671,105.40 and 271,465.76 is: 374,641.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,283.76 : 671,105.40 = 271,465.76 : x
  2. Step 2: Convert to fraction form
    486,283.76/671,105.40 = 271,465.76/x
  3. Step 3: Cross multiply
    486,283.76x = 671,105.40 × 271,465.76
  4. Step 4: Simplify right side
    486,283.76x = 182,182,137,451.10
  5. Step 5: Solve for x
    x = 182,182,137,451.10/486,283.76
  6. Step 6: Final answer
    x = 374,641.62

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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.