Home / 485,981.40-670,652.20-271,121.64

Finding the Fourth Proportional to 485,981.40, 670,652.20 and 271,121.64

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Solution

The fourth proportional to 485,981.40, 670,652.20 and 271,121.64 is: 374,146.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,981.40 : 670,652.20 = 271,121.64 : x
  2. Step 2: Convert to fraction form
    485,981.40/670,652.20 = 271,121.64/x
  3. Step 3: Cross multiply
    485,981.40x = 670,652.20 × 271,121.64
  4. Step 4: Simplify right side
    485,981.40x = 181,828,324,333.61
  5. Step 5: Solve for x
    x = 181,828,324,333.61/485,981.40
  6. Step 6: Final answer
    x = 374,146.67

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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.