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Finding the Fourth Proportional to 486,142.74, 670,875.75 and 271,280.52

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Solution

The fourth proportional to 486,142.74, 670,875.75 and 271,280.52 is: 374,366.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,142.74 : 670,875.75 = 271,280.52 : x
  2. Step 2: Convert to fraction form
    486,142.74/670,875.75 = 271,280.52/x
  3. Step 3: Cross multiply
    486,142.74x = 670,875.75 × 271,280.52
  4. Step 4: Simplify right side
    486,142.74x = 181,995,522,315.39
  5. Step 5: Solve for x
    x = 181,995,522,315.39/486,142.74
  6. Step 6: Final answer
    x = 374,366.43

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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.