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Finding the Fourth Proportional to 485,999.99, 670,680.41 and 271,140.10

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Solution

The fourth proportional to 485,999.99, 670,680.41 and 271,140.10 is: 374,173.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,999.99 : 670,680.41 = 271,140.10 : x
  2. Step 2: Convert to fraction form
    485,999.99/670,680.41 = 271,140.10/x
  3. Step 3: Cross multiply
    485,999.99x = 670,680.41 × 271,140.10
  4. Step 4: Simplify right side
    485,999.99x = 181,848,350,403.04
  5. Step 5: Solve for x
    x = 181,848,350,403.04/485,999.99
  6. Step 6: Final answer
    x = 374,173.57

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1.5x scale

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.