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Finding the Fourth Proportional to 312,018.72, 468,060.80 and 101,672.96

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Solution

The fourth proportional to 312,018.72, 468,060.80 and 101,672.96 is: 152,520.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,018.72 : 468,060.80 = 101,672.96 : x
  2. Step 2: Convert to fraction form
    312,018.72/468,060.80 = 101,672.96/x
  3. Step 3: Cross multiply
    312,018.72x = 468,060.80 × 101,672.96
  4. Step 4: Simplify right side
    312,018.72x = 47,589,126,995.97
  5. Step 5: Solve for x
    x = 47,589,126,995.97/312,018.72
  6. Step 6: Final answer
    x = 152,520.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.