Home / 215,983.89-298,056.86-120,490.65

Finding the Fourth Proportional to 215,983.89, 298,056.86 and 120,490.65

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Solution

The fourth proportional to 215,983.89, 298,056.86 and 120,490.65 is: 166,276.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,983.89 : 298,056.86 = 120,490.65 : x
  2. Step 2: Convert to fraction form
    215,983.89/298,056.86 = 120,490.65/x
  3. Step 3: Cross multiply
    215,983.89x = 298,056.86 × 120,490.65
  4. Step 4: Simplify right side
    215,983.89x = 35,913,064,195.91
  5. Step 5: Solve for x
    x = 35,913,064,195.91/215,983.89
  6. Step 6: Final answer
    x = 166,276.59

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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.